./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:22:08,236 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:22:08,332 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:22:08,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:22:08,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:22:08,369 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:22:08,369 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:22:08,370 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:22:08,370 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:22:08,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:22:08,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:22:08,370 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:22:08,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:22:08,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:22:08,371 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:22:08,371 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:22:08,371 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:22:08,372 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:22:08,372 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:22:08,372 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:22:08,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:22:08,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:22:08,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:22:08,373 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:22:08,373 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:22:08,373 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:22:08,373 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:08,373 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:08,373 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:08,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:08,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:22:08,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:22:08,374 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:22:08,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:22:08,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:08,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:22:08,375 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:22:08,376 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:22:08,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:22:08,376 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_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2024-11-27 20:22:08,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:22:08,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:22:08,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:22:08,686 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:22:08,686 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:22:08,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2024-11-27 20:22:11,629 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/data/9643a08bc/259f98557a5b4c3492a5f107230f1bb3/FLAGc66f0b463 [2024-11-27 20:22:12,335 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:22:12,336 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2024-11-27 20:22:12,388 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/data/9643a08bc/259f98557a5b4c3492a5f107230f1bb3/FLAGc66f0b463 [2024-11-27 20:22:12,714 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/data/9643a08bc/259f98557a5b4c3492a5f107230f1bb3 [2024-11-27 20:22:12,717 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:22:12,718 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:22:12,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:22:12,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:22:12,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:22:12,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:22:12" (1/1) ... [2024-11-27 20:22:12,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7f9e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:12, skipping insertion in model container [2024-11-27 20:22:12,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:22:12" (1/1) ... [2024-11-27 20:22:12,807 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:22:13,051 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_b388287b-bb22-41ee-9f81-2ab32328e860/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2024-11-27 20:22:13,058 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_b388287b-bb22-41ee-9f81-2ab32328e860/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2024-11-27 20:22:14,065 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,066 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,066 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,067 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,071 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,099 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,100 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,106 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,107 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,109 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,110 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,111 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,111 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,811 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,819 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:14,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:22:14,956 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:22:14,975 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_b388287b-bb22-41ee-9f81-2ab32328e860/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2024-11-27 20:22:14,979 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_b388287b-bb22-41ee-9f81-2ab32328e860/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2024-11-27 20:22:15,070 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,070 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,071 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,071 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,072 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,081 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,082 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,083 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,084 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,086 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,087 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,087 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,213 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,218 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:22:15,230 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2024-11-27 20:22:15,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:22:15,537 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:22:15,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15 WrapperNode [2024-11-27 20:22:15,538 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:22:15,539 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:22:15,539 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:22:15,539 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:22:15,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,735 INFO L138 Inliner]: procedures = 680, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 617 [2024-11-27 20:22:15,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:22:15,736 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:22:15,736 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:22:15,736 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:22:15,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,758 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,861 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [3, 238, 2, 8, 6, 62]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [1, 6, 2, 5, 0, 10]. The 240 writes are split as follows [1, 232, 0, 1, 2, 4]. [2024-11-27 20:22:15,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,868 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,946 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,955 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,972 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,980 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:15,996 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:22:15,997 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:22:15,997 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:22:15,997 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:22:15,998 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (1/1) ... [2024-11-27 20:22:16,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:22:16,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:16,042 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:22:16,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:22:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:22:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-27 20:22:16,075 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-27 20:22:16,075 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-27 20:22:16,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-27 20:22:16,076 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 20:22:16,076 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 20:22:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 20:22:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 20:22:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 20:22:16,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 20:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 20:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-27 20:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:22:16,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:22:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:22:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:22:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-27 20:22:16,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-27 20:22:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:22:16,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:22:16,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:22:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 20:22:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-27 20:22:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:22:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:22:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 20:22:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 20:22:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-27 20:22:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-27 20:22:16,082 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-27 20:22:16,082 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-27 20:22:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 20:22:16,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 20:22:16,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 20:22:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 20:22:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 20:22:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-27 20:22:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-27 20:22:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-27 20:22:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:22:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:22:16,085 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-11-27 20:22:16,085 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:22:16,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-27 20:22:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-27 20:22:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-27 20:22:16,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:22:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:22:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:22:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:22:16,088 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-27 20:22:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-27 20:22:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-27 20:22:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:22:16,089 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:22:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:22:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:22:16,090 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-27 20:22:16,488 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:22:16,490 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:22:23,172 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-11-27 20:22:23,173 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:22:23,195 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:22:23,196 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:22:23,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:22:23 BoogieIcfgContainer [2024-11-27 20:22:23,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:22:23,200 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:22:23,200 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:22:23,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:22:23,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:22:12" (1/3) ... [2024-11-27 20:22:23,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34964258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:22:23, skipping insertion in model container [2024-11-27 20:22:23,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:22:15" (2/3) ... [2024-11-27 20:22:23,209 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34964258 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:22:23, skipping insertion in model container [2024-11-27 20:22:23,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:22:23" (3/3) ... [2024-11-27 20:22:23,211 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2024-11-27 20:22:23,234 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:22:23,236 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_pop_back_harness.i that has 17 procedures, 170 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:22:23,314 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:22:23,331 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;@1552ca7b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:22:23,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:22:23,337 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 105 states have internal predecessors, (125), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2024-11-27 20:22:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 20:22:23,349 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:23,351 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:23,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:23,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:23,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1312837075, now seen corresponding path program 1 times [2024-11-27 20:22:23,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:23,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499116805] [2024-11-27 20:22:23,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:23,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:30,989 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:22:30,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:30,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499116805] [2024-11-27 20:22:30,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499116805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:22:30,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945724086] [2024-11-27 20:22:30,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:30,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:30,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:30,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:22:31,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:22:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:38,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:22:38,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:22:38,378 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-27 20:22:38,378 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:22:38,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945724086] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:38,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:22:38,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:22:38,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15742012] [2024-11-27 20:22:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:38,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:22:38,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:38,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:22:38,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:22:38,412 INFO L87 Difference]: Start difference. First operand has 170 states, 104 states have (on average 1.2019230769230769) internal successors, (125), 105 states have internal predecessors, (125), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:22:38,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:38,474 INFO L93 Difference]: Finished difference Result 333 states and 467 transitions. [2024-11-27 20:22:38,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:22:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2024-11-27 20:22:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:38,488 INFO L225 Difference]: With dead ends: 333 [2024-11-27 20:22:38,490 INFO L226 Difference]: Without dead ends: 165 [2024-11-27 20:22:38,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:22:38,502 INFO L435 NwaCegarLoop]: 218 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, 218 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 [2024-11-27 20:22:38,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:22:38,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-27 20:22:38,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-11-27 20:22:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 100 states have (on average 1.18) internal successors, (118), 101 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-27 20:22:38,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 213 transitions. [2024-11-27 20:22:38,552 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 213 transitions. Word has length 84 [2024-11-27 20:22:38,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:38,552 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 213 transitions. [2024-11-27 20:22:38,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:22:38,553 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 213 transitions. [2024-11-27 20:22:38,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 20:22:38,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:38,556 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:38,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:22:38,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:22:38,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:38,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:38,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1318781865, now seen corresponding path program 1 times [2024-11-27 20:22:38,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:38,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868476311] [2024-11-27 20:22:38,758 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:38,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:44,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-11-27 20:22:44,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:44,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868476311] [2024-11-27 20:22:44,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868476311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:44,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:44,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:22:44,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924791033] [2024-11-27 20:22:44,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:44,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:22:44,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:44,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:22:44,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:44,801 INFO L87 Difference]: Start difference. First operand 165 states and 213 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:22:44,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:44,922 INFO L93 Difference]: Finished difference Result 304 states and 395 transitions. [2024-11-27 20:22:44,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:22:44,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2024-11-27 20:22:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:44,929 INFO L225 Difference]: With dead ends: 304 [2024-11-27 20:22:44,929 INFO L226 Difference]: Without dead ends: 166 [2024-11-27 20:22:44,930 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:22:44,934 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:44,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 420 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:22:44,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-27 20:22:44,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-27 20:22:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.1782178217821782) internal successors, (119), 102 states have internal predecessors, (119), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-27 20:22:44,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2024-11-27 20:22:44,970 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 84 [2024-11-27 20:22:44,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:44,973 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2024-11-27 20:22:44,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-27 20:22:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2024-11-27 20:22:44,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 20:22:44,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:44,980 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:44,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:22:44,980 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:44,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:44,981 INFO L85 PathProgramCache]: Analyzing trace with hash -589675925, now seen corresponding path program 1 times [2024-11-27 20:22:44,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:44,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581898386] [2024-11-27 20:22:44,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:44,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 20:22:51,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:51,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581898386] [2024-11-27 20:22:51,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581898386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:22:51,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490188152] [2024-11-27 20:22:51,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:51,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:22:51,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:22:51,464 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:22:51,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:22:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:57,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 20:22:57,922 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:22:58,398 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-27 20:22:58,399 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:22:58,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490188152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:58,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:22:58,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-27 20:22:58,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738001237] [2024-11-27 20:22:58,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:58,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:22:58,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:58,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:22:58,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:22:58,402 INFO L87 Difference]: Start difference. First operand 166 states and 214 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 20:22:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:59,869 INFO L93 Difference]: Finished difference Result 296 states and 390 transitions. [2024-11-27 20:22:59,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:22:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2024-11-27 20:22:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:59,874 INFO L225 Difference]: With dead ends: 296 [2024-11-27 20:22:59,874 INFO L226 Difference]: Without dead ends: 168 [2024-11-27 20:22:59,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:22:59,876 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 227 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:59,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 648 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:22:59,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-27 20:22:59,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-27 20:22:59,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 104 states have internal predecessors, (120), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2024-11-27 20:22:59,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2024-11-27 20:22:59,898 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 84 [2024-11-27 20:22:59,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:59,898 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2024-11-27 20:22:59,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 20:22:59,899 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2024-11-27 20:22:59,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 20:22:59,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:59,901 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:59,919 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:23:00,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:00,102 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:00,103 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:00,103 INFO L85 PathProgramCache]: Analyzing trace with hash -911896437, now seen corresponding path program 1 times [2024-11-27 20:23:00,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:00,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119912731] [2024-11-27 20:23:00,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:00,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:06,654 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-27 20:23:06,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119912731] [2024-11-27 20:23:06,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119912731] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:06,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848844036] [2024-11-27 20:23:06,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:06,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:06,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:06,661 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:06,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:23:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:12,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:23:12,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:13,673 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-27 20:23:13,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:13,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848844036] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:13,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:13,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 20:23:13,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221986807] [2024-11-27 20:23:13,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:13,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:23:13,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:13,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:23:13,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:23:13,676 INFO L87 Difference]: Start difference. First operand 168 states and 220 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:23:16,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:16,297 INFO L93 Difference]: Finished difference Result 288 states and 379 transitions. [2024-11-27 20:23:16,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:23:16,298 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 99 [2024-11-27 20:23:16,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:16,300 INFO L225 Difference]: With dead ends: 288 [2024-11-27 20:23:16,300 INFO L226 Difference]: Without dead ends: 168 [2024-11-27 20:23:16,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:23:16,303 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 233 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:16,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 901 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 20:23:16,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-27 20:23:16,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-11-27 20:23:16,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 102 states have (on average 1.1764705882352942) internal successors, (120), 104 states have internal predecessors, (120), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2024-11-27 20:23:16,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2024-11-27 20:23:16,323 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 99 [2024-11-27 20:23:16,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:16,323 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2024-11-27 20:23:16,324 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:23:16,324 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2024-11-27 20:23:16,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-11-27 20:23:16,326 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:16,326 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:16,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 20:23:16,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:16,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:16,527 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:16,527 INFO L85 PathProgramCache]: Analyzing trace with hash 600120547, now seen corresponding path program 2 times [2024-11-27 20:23:16,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:16,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72612362] [2024-11-27 20:23:16,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:23:16,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:21,704 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:23:21,704 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:23:23,736 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-11-27 20:23:23,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:23,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72612362] [2024-11-27 20:23:23,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72612362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:23,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:23,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:23:23,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377805077] [2024-11-27 20:23:23,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:23,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:23:23,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:23,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:23:23,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:23:23,739 INFO L87 Difference]: Start difference. First operand 168 states and 217 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:23:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:25,257 INFO L93 Difference]: Finished difference Result 285 states and 371 transitions. [2024-11-27 20:23:25,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:23:25,258 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) Word has length 114 [2024-11-27 20:23:25,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:25,260 INFO L225 Difference]: With dead ends: 285 [2024-11-27 20:23:25,260 INFO L226 Difference]: Without dead ends: 166 [2024-11-27 20:23:25,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:23:25,262 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 62 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:25,262 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1392 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 20:23:25,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-27 20:23:25,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-11-27 20:23:25,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 101 states have (on average 1.1683168316831682) internal successors, (118), 102 states have internal predecessors, (118), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-27 20:23:25,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-11-27 20:23:25,282 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 114 [2024-11-27 20:23:25,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:25,283 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-11-27 20:23:25,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (15), 5 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-27 20:23:25,283 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-11-27 20:23:25,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-27 20:23:25,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:25,285 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:25,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:23:25,286 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:25,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:25,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1457916555, now seen corresponding path program 1 times [2024-11-27 20:23:25,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:25,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598541364] [2024-11-27 20:23:25,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:25,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:44,953 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-11-27 20:23:44,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598541364] [2024-11-27 20:23:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598541364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:23:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624860080] [2024-11-27 20:23:44,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:44,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:44,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:23:44,957 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:23:44,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b388287b-bb22-41ee-9f81-2ab32328e860/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process