./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 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd --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-826ab2b [2024-11-13 13:55:00,255 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:55:00,353 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-13 13:55:00,358 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:55:00,358 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:55:00,392 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:55:00,393 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:55:00,393 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:55:00,393 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:55:00,394 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:55:00,394 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:55:00,394 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:55:00,394 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:55:00,394 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:55:00,394 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:55:00,394 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:55:00,394 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 13:55:00,396 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 13:55:00,397 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:55:00,398 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:55:00,398 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:55:00,398 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:55:00,398 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:55:00,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:55:00,398 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:55:00,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:55:00,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:55:00,400 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd 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 [2024-11-13 13:55:00,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:55:00,720 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:55:00,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:55:00,724 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:55:00,724 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:55:00,726 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i Unable to find full path for "g++" [2024-11-13 13:55:02,506 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:55:03,162 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:55:03,163 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i [2024-11-13 13:55:03,219 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/data/3a9776696/c71ce836fd1d46569411e96bb7e65f17/FLAG9477151c8 [2024-11-13 13:55:03,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/data/3a9776696/c71ce836fd1d46569411e96bb7e65f17 [2024-11-13 13:55:03,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:55:03,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:55:03,250 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:55:03,250 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:55:03,260 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:55:03,261 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:55:03" (1/1) ... [2024-11-13 13:55:03,263 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@462498ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:03, skipping insertion in model container [2024-11-13 13:55:03,263 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:55:03" (1/1) ... [2024-11-13 13:55:03,369 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:55:03,646 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2024-11-13 13:55:03,652 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2024-11-13 13:55:04,507 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,508 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,508 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,510 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,512 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,537 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,538 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,539 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,540 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,542 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,543 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,544 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:04,544 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,132 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[150688,150701] [2024-11-13 13:55:05,133 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:55:05,152 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:55:05,166 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4499,4512] [2024-11-13 13:55:05,167 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[4559,4572] [2024-11-13 13:55:05,222 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,223 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,223 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,224 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,224 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,234 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,235 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,236 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,237 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,238 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,239 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,239 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,240 WARN L1684 CHandler]: Possible shadowing of function index [2024-11-13 13:55:05,340 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_eaef91cc-4126-4f2e-89ba-2c2dece272d6/sv-benchmarks/c/aws-c-common/aws_linked_list_push_back_harness.i[150688,150701] [2024-11-13 13:55:05,341 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:55:05,551 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:55:05,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05 WrapperNode [2024-11-13 13:55:05,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:55:05,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:55:05,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:55:05,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:55:05,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,662 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,717 INFO L138 Inliner]: procedures = 668, calls = 1046, calls flagged for inlining = 53, calls inlined = 6, statements flattened = 149 [2024-11-13 13:55:05,717 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:55:05,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:55:05,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:55:05,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:55:05,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,739 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,758 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]. [2024-11-13 13:55:05,758 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,777 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,788 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:55:05,789 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:55:05,789 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:55:05,789 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:55:05,790 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (1/1) ... [2024-11-13 13:55:05,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:55:05,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:05,831 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:55:05,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:55:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 13:55:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 13:55:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 13:55:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_next_is_valid [2024-11-13 13:55:05,862 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_next_is_valid [2024-11-13 13:55:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:55:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_is_valid [2024-11-13 13:55:05,863 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_is_valid [2024-11-13 13:55:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:55:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_insert_before [2024-11-13 13:55:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_insert_before [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:55:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 13:55:05,864 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 13:55:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 13:55:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 13:55:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:55:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:55:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 13:55:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-13 13:55:05,865 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-13 13:55:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure aws_linked_list_node_prev_is_valid [2024-11-13 13:55:05,866 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_linked_list_node_prev_is_valid [2024-11-13 13:55:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:55:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:55:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-13 13:55:06,161 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:55:06,163 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:55:06,593 INFO L? ?]: Removed 67 outVars from TransFormulas that were not future-live. [2024-11-13 13:55:06,593 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:55:06,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:55:06,613 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 13:55:06,613 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:55:06 BoogieIcfgContainer [2024-11-13 13:55:06,613 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:55:06,615 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:55:06,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:55:06,620 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:55:06,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:55:03" (1/3) ... [2024-11-13 13:55:06,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23365c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:55:06, skipping insertion in model container [2024-11-13 13:55:06,621 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:55:05" (2/3) ... [2024-11-13 13:55:06,621 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23365c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:55:06, skipping insertion in model container [2024-11-13 13:55:06,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:55:06" (3/3) ... [2024-11-13 13:55:06,623 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_linked_list_push_back_harness.i [2024-11-13 13:55:06,641 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:55:06,642 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_linked_list_push_back_harness.i that has 8 procedures, 101 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-13 13:55:06,703 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:55:06,714 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;@62934d72, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:55:06,715 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 13:55:06,719 INFO L276 IsEmpty]: Start isEmpty. Operand has 101 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 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) [2024-11-13 13:55:06,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:55:06,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:06,728 INFO L215 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] [2024-11-13 13:55:06,729 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:06,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:06,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1109809815, now seen corresponding path program 1 times [2024-11-13 13:55:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274210158] [2024-11-13 13:55:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,205 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,224 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:55:07,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 13:55:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:55:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 13:55:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:55:07,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,441 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-13 13:55:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 13:55:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:07,489 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 13:55:07,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:07,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274210158] [2024-11-13 13:55:07,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274210158] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:07,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:07,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:55:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205360434] [2024-11-13 13:55:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:07,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:55:07,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:07,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:55:07,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:55:07,517 INFO L87 Difference]: Start difference. First operand has 101 states, 64 states have (on average 1.296875) internal successors, (83), 65 states have internal predecessors, (83), 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 17.5) internal successors, (35), 2 states have internal predecessors, (35), 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) [2024-11-13 13:55:07,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:07,547 INFO L93 Difference]: Finished difference Result 194 states and 289 transitions. [2024-11-13 13:55:07,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:55:07,549 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (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 [2024-11-13 13:55:07,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:07,556 INFO L225 Difference]: With dead ends: 194 [2024-11-13 13:55:07,556 INFO L226 Difference]: Without dead ends: 96 [2024-11-13 13:55:07,560 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:55:07,563 INFO L432 NwaCegarLoop]: 135 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, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:07,564 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:55:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-13 13:55:07,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2024-11-13 13:55:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 60 states have (on average 1.25) internal successors, (75), 61 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) [2024-11-13 13:55:07,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 130 transitions. [2024-11-13 13:55:07,607 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 130 transitions. Word has length 73 [2024-11-13 13:55:07,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:07,607 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 130 transitions. [2024-11-13 13:55:07,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (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) [2024-11-13 13:55:07,608 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 130 transitions. [2024-11-13 13:55:07,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-13 13:55:07,610 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:07,611 INFO L215 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] [2024-11-13 13:55:07,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:55:07,611 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:07,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:07,612 INFO L85 PathProgramCache]: Analyzing trace with hash 2090689191, now seen corresponding path program 1 times [2024-11-13 13:55:07,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:07,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347724956] [2024-11-13 13:55:07,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:07,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:55:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,537 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2024-11-13 13:55:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-13 13:55:08,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 13:55:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:55:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,772 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2024-11-13 13:55:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,788 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-13 13:55:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:08,812 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 13:55:08,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347724956] [2024-11-13 13:55:08,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347724956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:08,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962901615] [2024-11-13 13:55:08,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:08,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:08,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:08,817 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:55:08,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:55:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:09,154 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-13 13:55:09,169 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:55:09,319 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 18 treesize of output 19 [2024-11-13 13:55:09,340 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 24 treesize of output 9 [2024-11-13 13:55:09,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:09,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:09,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:09,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 25 [2024-11-13 13:55:09,504 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:09,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:09,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 13 [2024-11-13 13:55:10,329 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 13:55:10,329 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 13:55:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962901615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:10,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-13 13:55:10,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2024-11-13 13:55:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344466168] [2024-11-13 13:55:10,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:10,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 13:55:10,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:10,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 13:55:10,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-11-13 13:55:10,337 INFO L87 Difference]: Start difference. First operand 96 states and 130 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-13 13:55:11,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:11,341 INFO L93 Difference]: Finished difference Result 234 states and 318 transitions. [2024-11-13 13:55:11,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 13:55:11,341 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) Word has length 73 [2024-11-13 13:55:11,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:11,345 INFO L225 Difference]: With dead ends: 234 [2024-11-13 13:55:11,345 INFO L226 Difference]: Without dead ends: 149 [2024-11-13 13:55:11,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-13 13:55:11,347 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 57 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:11,347 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 757 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 13:55:11,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2024-11-13 13:55:11,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2024-11-13 13:55:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 100 states have internal predecessors, (127), 36 states have call successors, (36), 12 states have call predecessors, (36), 11 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-13 13:55:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 198 transitions. [2024-11-13 13:55:11,370 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 198 transitions. Word has length 73 [2024-11-13 13:55:11,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:11,371 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 198 transitions. [2024-11-13 13:55:11,371 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 2 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-13 13:55:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 198 transitions. [2024-11-13 13:55:11,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-13 13:55:11,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:11,374 INFO L215 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, 1] [2024-11-13 13:55:11,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:55:11,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:11,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:11,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash -93952407, now seen corresponding path program 1 times [2024-11-13 13:55:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872685578] [2024-11-13 13:55:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:11,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:12,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,173 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-13 13:55:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,214 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-13 13:55:12,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 13:55:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-13 13:55:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-13 13:55:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 13:55:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,352 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-13 13:55:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-13 13:55:12,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:12,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872685578] [2024-11-13 13:55:12,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872685578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:12,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647846782] [2024-11-13 13:55:12,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:12,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:12,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:12,371 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:55:12,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:55:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:12,673 INFO L255 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 13:55:12,681 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:55:12,763 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 18 treesize of output 19 [2024-11-13 13:55:12,777 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 24 treesize of output 9 [2024-11-13 13:55:12,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:12,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 13:55:12,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:12,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 13:55:12,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:12,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:12,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 40 [2024-11-13 13:55:12,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:12,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2024-11-13 13:55:13,056 INFO L349 Elim1Store]: treesize reduction 50, result has 18.0 percent of original size [2024-11-13 13:55:13,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 157 treesize of output 155 [2024-11-13 13:55:13,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:13,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:13,077 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:13,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 112 [2024-11-13 13:55:13,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:13,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 22 [2024-11-13 13:55:13,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:13,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 24 [2024-11-13 13:55:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-13 13:55:14,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:55:14,573 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|))) (and (forall ((v_ArrVal_391 Int)) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_391)))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset|))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse2) 0)) (forall ((v_ArrVal_389 Int) (v_ArrVal_390 (Array Int Int))) (= (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| v_ArrVal_390))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_389))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse2) 0)))) is different from false [2024-11-13 13:55:14,614 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:14,614 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 89 treesize of output 90 [2024-11-13 13:55:14,662 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.offset| 24)) (.cse2 (+ 16 |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11| Int)) (or (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11| 1)) (forall ((v_ArrVal_389 Int) (v_ArrVal_390 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11|)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11| v_ArrVal_390))) (store .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse0 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 v_ArrVal_389))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse2) 0)))) (forall ((|v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11| Int)) (or (forall ((v_arrayElimArr_5 (Array Int Int)) (v_ArrVal_388 Int)) (= (select (select (let ((.cse3 (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base| (store (select |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base|) |c_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.offset| v_ArrVal_388)) |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11| v_arrayElimArr_5))) (store .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base| (store (select .cse3 |c_ULTIMATE.start_ensure_linked_list_is_allocated_~list#1.base|) .cse1 0))) |c_ULTIMATE.start_aws_linked_list_push_back_harness_~#list~0#1.base|) .cse2) 0)) (< |c_#StackHeapBarrier| (+ |v_ULTIMATE.start_ensure_linked_list_is_allocated_~curr~0#1.base_11| 1)))))) is different from false [2024-11-13 13:55:14,699 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:55:14,701 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:55:14,810 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-13 13:55:14,810 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 171 treesize of output 200 [2024-11-13 13:55:14,843 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:55:14,844 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:55:14,947 INFO L349 Elim1Store]: treesize reduction 86, result has 45.2 percent of original size [2024-11-13 13:55:14,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 201 treesize of output 230 [2024-11-13 13:55:14,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:14,987 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 288 treesize of output 272 [2024-11-13 13:55:15,005 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 231 treesize of output 219 [2024-11-13 13:55:15,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:15,039 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 310 treesize of output 310 [2024-11-13 13:55:15,076 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 269 treesize of output 257 [2024-11-13 13:55:15,122 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2024-11-13 13:55:15,689 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 7 treesize of output 3 [2024-11-13 13:55:16,059 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:16,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 132 treesize of output 124 [2024-11-13 13:55:16,218 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:55:16,219 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:55:16,240 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:16,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 133 [2024-11-13 13:55:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 1 not checked. [2024-11-13 13:55:16,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1647846782] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:55:16,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:55:16,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 10] total 23 [2024-11-13 13:55:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217935502] [2024-11-13 13:55:16,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:55:16,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 13:55:16,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:16,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 13:55:16,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=364, Unknown=2, NotChecked=78, Total=506 [2024-11-13 13:55:16,395 INFO L87 Difference]: Start difference. First operand 146 states and 198 transitions. Second operand has 23 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 7 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (22), 5 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-13 13:55:19,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:19,258 INFO L93 Difference]: Finished difference Result 315 states and 431 transitions. [2024-11-13 13:55:19,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 13:55:19,259 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 7 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (22), 5 states have call predecessors, (22), 7 states have call successors, (22) Word has length 74 [2024-11-13 13:55:19,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:19,261 INFO L225 Difference]: With dead ends: 315 [2024-11-13 13:55:19,262 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 13:55:19,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=158, Invalid=1038, Unknown=2, NotChecked=134, Total=1332 [2024-11-13 13:55:19,264 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 72 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2267 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:19,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2267 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 803 Invalid, 0 Unknown, 280 Unchecked, 2.0s Time] [2024-11-13 13:55:19,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 13:55:19,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 148. [2024-11-13 13:55:19,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 99 states have (on average 1.292929292929293) internal successors, (128), 102 states have internal predecessors, (128), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (37), 33 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-13 13:55:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 201 transitions. [2024-11-13 13:55:19,303 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 201 transitions. Word has length 74 [2024-11-13 13:55:19,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:19,304 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 201 transitions. [2024-11-13 13:55:19,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 4.1) internal successors, (82), 21 states have internal predecessors, (82), 7 states have call successors, (24), 3 states have call predecessors, (24), 6 states have return successors, (22), 5 states have call predecessors, (22), 7 states have call successors, (22) [2024-11-13 13:55:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 201 transitions. [2024-11-13 13:55:19,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:55:19,309 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:19,309 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:55:19,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:55:19,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-13 13:55:19,510 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:19,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:19,510 INFO L85 PathProgramCache]: Analyzing trace with hash -340554645, now seen corresponding path program 1 times [2024-11-13 13:55:19,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:19,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962298091] [2024-11-13 13:55:19,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:19,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:19,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,799 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:55:19,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:55:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:55:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,901 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 13:55:19,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:55:19,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:55:19,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:55:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:19,943 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 13:55:19,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:19,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962298091] [2024-11-13 13:55:19,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962298091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:19,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:19,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 13:55:19,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65152485] [2024-11-13 13:55:19,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:19,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:55:19,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:19,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:55:19,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:55:19,946 INFO L87 Difference]: Start difference. First operand 148 states and 201 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) [2024-11-13 13:55:20,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:20,073 INFO L93 Difference]: Finished difference Result 263 states and 356 transitions. [2024-11-13 13:55:20,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:55:20,073 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 77 [2024-11-13 13:55:20,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:20,075 INFO L225 Difference]: With dead ends: 263 [2024-11-13 13:55:20,075 INFO L226 Difference]: Without dead ends: 152 [2024-11-13 13:55:20,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:55:20,077 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 23 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 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 [2024-11-13 13:55:20,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 643 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 13:55:20,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-13 13:55:20,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 148. [2024-11-13 13:55:20,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 99 states have (on average 1.2727272727272727) internal successors, (126), 102 states have internal predecessors, (126), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (37), 33 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-13 13:55:20,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 199 transitions. [2024-11-13 13:55:20,098 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 199 transitions. Word has length 77 [2024-11-13 13:55:20,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:20,098 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 199 transitions. [2024-11-13 13:55:20,098 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) [2024-11-13 13:55:20,099 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 199 transitions. [2024-11-13 13:55:20,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 13:55:20,100 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:20,100 INFO L215 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, 1, 1, 1, 1] [2024-11-13 13:55:20,100 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:55:20,101 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:20,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:20,101 INFO L85 PathProgramCache]: Analyzing trace with hash 47358910, now seen corresponding path program 1 times [2024-11-13 13:55:20,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:20,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263287591] [2024-11-13 13:55:20,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:20,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,328 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:55:20,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2024-11-13 13:55:20,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,417 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-11-13 13:55:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-13 13:55:20,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2024-11-13 13:55:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2024-11-13 13:55:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2024-11-13 13:55:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 13:55:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263287591] [2024-11-13 13:55:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263287591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:20,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:20,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 13:55:20,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580525934] [2024-11-13 13:55:20,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:20,463 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 13:55:20,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:20,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 13:55:20,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 13:55:20,464 INFO L87 Difference]: Start difference. First operand 148 states and 199 transitions. Second operand has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2024-11-13 13:55:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:20,627 INFO L93 Difference]: Finished difference Result 275 states and 373 transitions. [2024-11-13 13:55:20,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 13:55:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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 [2024-11-13 13:55:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:20,630 INFO L225 Difference]: With dead ends: 275 [2024-11-13 13:55:20,631 INFO L226 Difference]: Without dead ends: 162 [2024-11-13 13:55:20,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:55:20,632 INFO L432 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 [2024-11-13 13:55:20,632 INFO L433 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] [2024-11-13 13:55:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2024-11-13 13:55:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 150. [2024-11-13 13:55:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 101 states have (on average 1.2673267326732673) internal successors, (128), 104 states have internal predecessors, (128), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (37), 33 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-13 13:55:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 201 transitions. [2024-11-13 13:55:20,671 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 201 transitions. Word has length 77 [2024-11-13 13:55:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:20,671 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 201 transitions. [2024-11-13 13:55:20,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 8 states have internal predecessors, (39), 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) [2024-11-13 13:55:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 201 transitions. [2024-11-13 13:55:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 13:55:20,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:20,677 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:55:20,677 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:55:20,677 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:20,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:20,677 INFO L85 PathProgramCache]: Analyzing trace with hash 1817852711, now seen corresponding path program 1 times [2024-11-13 13:55:20,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:20,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552809092] [2024-11-13 13:55:20,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:20,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,968 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,976 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:20,985 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 13:55:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,020 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-13 13:55:21,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 13:55:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-13 13:55:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 13:55:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-13 13:55:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 13:55:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2024-11-13 13:55:21,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:21,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552809092] [2024-11-13 13:55:21,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552809092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:55:21,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:55:21,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 13:55:21,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7003185] [2024-11-13 13:55:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:55:21,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:55:21,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:55:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:55:21,071 INFO L87 Difference]: Start difference. First operand 150 states and 201 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 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) [2024-11-13 13:55:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:55:21,143 INFO L93 Difference]: Finished difference Result 268 states and 365 transitions. [2024-11-13 13:55:21,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 13:55:21,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 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 80 [2024-11-13 13:55:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:55:21,146 INFO L225 Difference]: With dead ends: 268 [2024-11-13 13:55:21,146 INFO L226 Difference]: Without dead ends: 158 [2024-11-13 13:55:21,146 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 13:55:21,147 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 10 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:55:21,147 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 453 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 13:55:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2024-11-13 13:55:21,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 152. [2024-11-13 13:55:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 103 states have (on average 1.2621359223300972) internal successors, (130), 106 states have internal predecessors, (130), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (37), 33 states have call predecessors, (37), 35 states have call successors, (37) [2024-11-13 13:55:21,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 203 transitions. [2024-11-13 13:55:21,167 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 203 transitions. Word has length 80 [2024-11-13 13:55:21,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:55:21,168 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 203 transitions. [2024-11-13 13:55:21,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 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) [2024-11-13 13:55:21,168 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 203 transitions. [2024-11-13 13:55:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 13:55:21,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:55:21,170 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:55:21,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:55:21,170 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:55:21,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:55:21,170 INFO L85 PathProgramCache]: Analyzing trace with hash 972998181, now seen corresponding path program 1 times [2024-11-13 13:55:21,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:55:21,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425473102] [2024-11-13 13:55:21,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:21,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:55:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:55:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:55:21,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:55:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 13:55:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,876 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-13 13:55:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-13 13:55:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,934 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-13 13:55:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,944 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2024-11-13 13:55:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,951 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-13 13:55:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2024-11-13 13:55:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:21,967 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-13 13:55:21,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:55:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425473102] [2024-11-13 13:55:21,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425473102] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:21,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296151941] [2024-11-13 13:55:21,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:55:21,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:55:21,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:55:21,970 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:55:21,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:55:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:55:22,262 INFO L255 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 101 conjuncts are in the unsatisfiable core [2024-11-13 13:55:22,269 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:55:22,296 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 [2024-11-13 13:55:22,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 12 [2024-11-13 13:55:22,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-13 13:55:23,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:23,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:23,545 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 [2024-11-13 13:55:23,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:23,616 INFO L349 Elim1Store]: treesize reduction 118, result has 25.3 percent of original size [2024-11-13 13:55:23,616 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 [2024-11-13 13:55:23,647 INFO L349 Elim1Store]: treesize reduction 30, result has 14.3 percent of original size [2024-11-13 13:55:23,647 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 178 treesize of output 159 [2024-11-13 13:55:23,654 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 141 treesize of output 117 [2024-11-13 13:55:23,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 13:55:23,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 52 [2024-11-13 13:55:23,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 13:55:23,670 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:23,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 7 [2024-11-13 13:55:23,694 INFO L349 Elim1Store]: treesize reduction 16, result has 50.0 percent of original size [2024-11-13 13:55:23,694 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 57 treesize of output 59 [2024-11-13 13:55:23,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 1 [2024-11-13 13:55:24,496 INFO L349 Elim1Store]: treesize reduction 205, result has 31.9 percent of original size [2024-11-13 13:55:24,496 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 10 new quantified variables, introduced 21 case distinctions, treesize of input 185 treesize of output 193 [2024-11-13 13:55:24,608 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 13:55:24,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:55:25,191 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 [2024-11-13 13:55:25,232 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:25,233 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 [2024-11-13 13:55:25,244 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 13:55:25,245 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 260 treesize of output 258 [2024-11-13 13:55:25,254 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 247 treesize of output 239 [2024-11-13 13:55:25,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2024-11-13 13:55:25,291 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 [2024-11-13 13:55:30,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296151941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:55:30,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 13:55:30,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 21] total 26 [2024-11-13 13:55:30,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458447133] [2024-11-13 13:55:30,035 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 13:55:30,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 13:55:30,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:55:30,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 13:55:30,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1033, Unknown=1, NotChecked=0, Total=1122 [2024-11-13 13:55:30,038 INFO L87 Difference]: Start difference. First operand 152 states and 203 transitions. Second operand has 26 states, 23 states have (on average 4.391304347826087) internal successors, (101), 21 states have internal predecessors, (101), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-13 13:55:34,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:55:38,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:55:42,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:55:46,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:55:50,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:55:56,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:56:01,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 13:56:03,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 13:56:03,168 INFO L93 Difference]: Finished difference Result 410 states and 546 transitions. [2024-11-13 13:56:03,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-13 13:56:03,169 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 4.391304347826087) internal successors, (101), 21 states have internal predecessors, (101), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) Word has length 86 [2024-11-13 13:56:03,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 13:56:03,172 INFO L225 Difference]: With dead ends: 410 [2024-11-13 13:56:03,172 INFO L226 Difference]: Without dead ends: 296 [2024-11-13 13:56:03,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 89 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=285, Invalid=3620, Unknown=1, NotChecked=0, Total=3906 [2024-11-13 13:56:03,175 INFO L432 NwaCegarLoop]: 127 mSDtfsCounter, 280 mSDsluCounter, 1935 mSDsCounter, 0 mSdLazyCounter, 1462 mSolverCounterSat, 130 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1462 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time [2024-11-13 13:56:03,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 2062 Invalid, 1599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1462 Invalid, 7 Unknown, 0 Unchecked, 31.0s Time] [2024-11-13 13:56:03,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-13 13:56:03,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 281. [2024-11-13 13:56:03,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 193 states have (on average 1.2538860103626943) internal successors, (242), 198 states have internal predecessors, (242), 64 states have call successors, (64), 22 states have call predecessors, (64), 23 states have return successors, (67), 60 states have call predecessors, (67), 62 states have call successors, (67) [2024-11-13 13:56:03,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 373 transitions. [2024-11-13 13:56:03,219 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 373 transitions. Word has length 86 [2024-11-13 13:56:03,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 13:56:03,219 INFO L471 AbstractCegarLoop]: Abstraction has 281 states and 373 transitions. [2024-11-13 13:56:03,219 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 4.391304347826087) internal successors, (101), 21 states have internal predecessors, (101), 9 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (20), 8 states have call predecessors, (20), 8 states have call successors, (20) [2024-11-13 13:56:03,220 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 373 transitions. [2024-11-13 13:56:03,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-13 13:56:03,221 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 13:56:03,221 INFO L215 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, 1, 1] [2024-11-13 13:56:03,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:56:03,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:03,422 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 13:56:03,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:56:03,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2103244554, now seen corresponding path program 1 times [2024-11-13 13:56:03,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:56:03,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065313967] [2024-11-13 13:56:03,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:03,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:56:03,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:03,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 13:56:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:03,819 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-13 13:56:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:03,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-13 13:56:03,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-13 13:56:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-13 13:56:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,078 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-13 13:56:04,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2024-11-13 13:56:04,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-13 13:56:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,100 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2024-11-13 13:56:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2024-11-13 13:56:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-13 13:56:04,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:56:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065313967] [2024-11-13 13:56:04,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065313967] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:56:04,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861459359] [2024-11-13 13:56:04,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:56:04,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:56:04,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:56:04,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:56:04,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaef91cc-4126-4f2e-89ba-2c2dece272d6/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:56:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:56:04,404 INFO L255 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:56:04,408 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:56:04,593 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 [2024-11-13 13:56:04,598 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 [2024-11-13 13:56:04,660 INFO L349 Elim1Store]: treesize reduction 35, result has 43.5 percent of original size [2024-11-13 13:56:04,660 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 [2024-11-13 13:56:04,672 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 [2024-11-13 13:56:04,725 INFO L349 Elim1Store]: treesize reduction 68, result has 11.7 percent of original size [2024-11-13 13:56:04,725 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 1349 treesize of output 1295 [2024-11-13 13:56:04,765 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:56:04,773 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 13:56:04,989 INFO L349 Elim1Store]: treesize reduction 250, result has 31.9 percent of original size [2024-11-13 13:56:04,990 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 [2024-11-13 13:56:06,495 WARN L214 Elim1Store]: Array PQE input equivalent to false