./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_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/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_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:29:04,916 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:29:04,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-12-02 15:29:04,977 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:29:04,977 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:29:04,999 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:29:04,999 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:29:04,999 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:29:05,000 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:29:05,000 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:29:05,000 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:29:05,000 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:29:05,000 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:29:05,000 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:29:05,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:29:05,001 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:29:05,002 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:29:05,002 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:29:05,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:29:05,002 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:29:05,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:29:05,003 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_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e3d62ab3962e5958dc41169c7885079de47f5dcf75079068205793f151a2e2b [2024-12-02 15:29:05,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:29:05,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:29:05,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:29:05,256 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:29:05,256 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:29:05,257 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2024-12-02 15:29:07,913 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/data/30915068d/a71c0848949e407fa043403756520e76/FLAGfd84e31e0 [2024-12-02 15:29:08,286 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:29:08,287 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i [2024-12-02 15:29:08,317 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/data/30915068d/a71c0848949e407fa043403756520e76/FLAGfd84e31e0 [2024-12-02 15:29:08,481 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/data/30915068d/a71c0848949e407fa043403756520e76 [2024-12-02 15:29:08,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:29:08,484 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:29:08,486 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:29:08,486 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:29:08,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:29:08,490 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:29:08" (1/1) ... [2024-12-02 15:29:08,491 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ac4fffd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:08, skipping insertion in model container [2024-12-02 15:29:08,491 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:29:08" (1/1) ... [2024-12-02 15:29:08,551 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:29:08,763 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_2c173e69-7abd-4942-8239-f84b84c72931/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2024-12-02 15:29:08,769 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_2c173e69-7abd-4942-8239-f84b84c72931/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2024-12-02 15:29:09,406 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,406 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,407 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,407 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,408 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,416 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,417 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,418 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,419 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,421 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,421 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,422 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,422 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,834 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,840 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:09,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:29:09,921 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:29:09,934 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_2c173e69-7abd-4942-8239-f84b84c72931/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4497,4510] [2024-12-02 15:29:09,935 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_2c173e69-7abd-4942-8239-f84b84c72931/sv-benchmarks/c/aws-c-common/aws_array_list_pop_back_harness.i[4557,4570] [2024-12-02 15:29:10,005 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,005 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,005 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,005 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,006 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,011 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,012 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,012 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,013 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,014 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,014 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,014 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,014 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,075 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,080 WARN L1675 CHandler]: Possible shadowing of function index [2024-12-02 15:29:10,087 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7769-7780] [2024-12-02 15:29:10,101 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:29:10,292 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:29:10,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10 WrapperNode [2024-12-02 15:29:10,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:29:10,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:29:10,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:29:10,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:29:10,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,391 INFO L138 Inliner]: procedures = 680, calls = 1695, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 617 [2024-12-02 15:29:10,391 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:29:10,391 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:29:10,392 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:29:10,392 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:29:10,401 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,401 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,407 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,462 INFO L175 MemorySlicer]: Split 319 memory accesses to 6 slices as follows [238, 8, 2, 6, 3, 62]. 75 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [6, 5, 2, 0, 1, 10]. The 240 writes are split as follows [232, 1, 0, 2, 1, 4]. [2024-12-02 15:29:10,462 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,462 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,490 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,492 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,495 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,502 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,505 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,513 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:29:10,513 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:29:10,513 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:29:10,514 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:29:10,514 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (1/1) ... [2024-12-02 15:29:10,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:29:10,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:10,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:29:10,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:29:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 15:29:10,565 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-12-02 15:29:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-12-02 15:29:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-12-02 15:29:10,566 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 15:29:10,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-12-02 15:29:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 15:29:10,567 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 15:29:10,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:29:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-12-02 15:29:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-12-02 15:29:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-12-02 15:29:10,568 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-12-02 15:29:10,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-12-02 15:29:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-12-02 15:29:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2024-12-02 15:29:10,569 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-12-02 15:29:10,569 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-12-02 15:29:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-12-02 15:29:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-12-02 15:29:10,570 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-12-02 15:29:10,570 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-12-02 15:29:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-12-02 15:29:10,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 15:29:10,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 15:29:10,821 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:29:10,823 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:29:16,846 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-12-02 15:29:16,846 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:29:16,857 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:29:16,858 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 15:29:16,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:29:16 BoogieIcfgContainer [2024-12-02 15:29:16,858 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:29:16,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:29:16,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:29:16,864 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:29:16,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:29:08" (1/3) ... [2024-12-02 15:29:16,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300e5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:29:16, skipping insertion in model container [2024-12-02 15:29:16,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:29:10" (2/3) ... [2024-12-02 15:29:16,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1300e5b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:29:16, skipping insertion in model container [2024-12-02 15:29:16,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:29:16" (3/3) ... [2024-12-02 15:29:16,866 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness.i [2024-12-02 15:29:16,878 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:29:16,879 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. [2024-12-02 15:29:16,923 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:29:16,933 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;@1e869002, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:29:16,933 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 15:29:16,936 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) [2024-12-02 15:29:16,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:29:16,944 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:16,944 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] [2024-12-02 15:29:16,945 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:16,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:16,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1312837075, now seen corresponding path program 1 times [2024-12-02 15:29:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:16,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332728835] [2024-12-02 15:29:16,955 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:22,495 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:29:22,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332728835] [2024-12-02 15:29:22,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332728835] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:22,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153962102] [2024-12-02 15:29:22,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:22,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:22,498 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:22,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:29:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:27,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 4161 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 15:29:27,946 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:27,960 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-12-02 15:29:27,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:29:27,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153962102] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:27,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:29:27,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-12-02 15:29:27,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629371119] [2024-12-02 15:29:27,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:27,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 15:29:27,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:27,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 15:29:27,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 15:29:27,981 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) [2024-12-02 15:29:28,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:28,016 INFO L93 Difference]: Finished difference Result 333 states and 467 transitions. [2024-12-02 15:29:28,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 15:29:28,017 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 [2024-12-02 15:29:28,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:28,024 INFO L225 Difference]: With dead ends: 333 [2024-12-02 15:29:28,024 INFO L226 Difference]: Without dead ends: 165 [2024-12-02 15:29:28,028 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 [2024-12-02 15:29:28,030 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 [2024-12-02 15:29:28,031 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] [2024-12-02 15:29:28,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-12-02 15:29:28,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2024-12-02 15:29:28,063 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) [2024-12-02 15:29:28,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 213 transitions. [2024-12-02 15:29:28,070 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 213 transitions. Word has length 84 [2024-12-02 15:29:28,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:28,071 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 213 transitions. [2024-12-02 15:29:28,071 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) [2024-12-02 15:29:28,072 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 213 transitions. [2024-12-02 15:29:28,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:29:28,074 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:28,075 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] [2024-12-02 15:29:28,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:29:28,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-12-02 15:29:28,275 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:28,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:28,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1318781865, now seen corresponding path program 1 times [2024-12-02 15:29:28,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:28,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762963715] [2024-12-02 15:29:28,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:28,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:32,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:33,038 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2024-12-02 15:29:33,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:33,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762963715] [2024-12-02 15:29:33,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762963715] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:33,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:29:33,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 15:29:33,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271635249] [2024-12-02 15:29:33,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:33,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:29:33,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:33,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:29:33,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:29:33,041 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) [2024-12-02 15:29:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:33,110 INFO L93 Difference]: Finished difference Result 304 states and 395 transitions. [2024-12-02 15:29:33,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:29:33,110 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 [2024-12-02 15:29:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:33,113 INFO L225 Difference]: With dead ends: 304 [2024-12-02 15:29:33,113 INFO L226 Difference]: Without dead ends: 166 [2024-12-02 15:29:33,114 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 [2024-12-02 15:29:33,115 INFO L435 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:33,115 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 420 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:29:33,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-12-02 15:29:33,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-12-02 15:29:33,128 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) [2024-12-02 15:29:33,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 214 transitions. [2024-12-02 15:29:33,131 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 214 transitions. Word has length 84 [2024-12-02 15:29:33,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:33,132 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 214 transitions. [2024-12-02 15:29:33,132 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) [2024-12-02 15:29:33,132 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 214 transitions. [2024-12-02 15:29:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:29:33,134 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:33,134 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] [2024-12-02 15:29:33,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:29:33,134 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:33,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash -589675925, now seen corresponding path program 1 times [2024-12-02 15:29:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380493763] [2024-12-02 15:29:33,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:33,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:38,393 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-12-02 15:29:38,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380493763] [2024-12-02 15:29:38,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380493763] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:38,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450580038] [2024-12-02 15:29:38,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:38,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:38,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:38,396 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:38,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:29:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:43,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 4164 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 15:29:43,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:43,726 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-12-02 15:29:43,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:29:43,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450580038] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:43,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:29:43,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-12-02 15:29:43,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427753205] [2024-12-02 15:29:43,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:43,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:29:43,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:43,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:29:43,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:29:43,728 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) [2024-12-02 15:29:45,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:45,041 INFO L93 Difference]: Finished difference Result 296 states and 390 transitions. [2024-12-02 15:29:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:29:45,041 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 [2024-12-02 15:29:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:45,044 INFO L225 Difference]: With dead ends: 296 [2024-12-02 15:29:45,044 INFO L226 Difference]: Without dead ends: 168 [2024-12-02 15:29:45,044 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-12-02 15:29:45,045 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 227 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:45,045 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 648 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-12-02 15:29:45,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-12-02 15:29:45,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-12-02 15:29:45,058 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) [2024-12-02 15:29:45,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2024-12-02 15:29:45,060 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 84 [2024-12-02 15:29:45,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:45,060 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2024-12-02 15:29:45,060 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) [2024-12-02 15:29:45,061 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2024-12-02 15:29:45,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-12-02 15:29:45,062 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:45,062 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] [2024-12-02 15:29:45,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:29:45,262 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:45,263 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:45,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:45,263 INFO L85 PathProgramCache]: Analyzing trace with hash -911896437, now seen corresponding path program 1 times [2024-12-02 15:29:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206164337] [2024-12-02 15:29:45,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:45,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:29:49,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:50,358 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-12-02 15:29:50,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:29:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206164337] [2024-12-02 15:29:50,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206164337] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:29:50,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032706435] [2024-12-02 15:29:50,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:29:50,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:29:50,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:29:50,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:29:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:29:55,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 4291 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 15:29:55,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:29:56,664 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-12-02 15:29:56,665 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:29:56,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1032706435] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:29:56,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:29:56,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-12-02 15:29:56,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370397093] [2024-12-02 15:29:56,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:29:56,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 15:29:56,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:29:56,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 15:29:56,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:29:56,666 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) [2024-12-02 15:29:59,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:29:59,074 INFO L93 Difference]: Finished difference Result 288 states and 379 transitions. [2024-12-02 15:29:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:29:59,075 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 [2024-12-02 15:29:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:29:59,077 INFO L225 Difference]: With dead ends: 288 [2024-12-02 15:29:59,077 INFO L226 Difference]: Without dead ends: 168 [2024-12-02 15:29:59,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:29:59,079 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 233 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:29:59,079 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 901 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-12-02 15:29:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-12-02 15:29:59,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2024-12-02 15:29:59,093 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) [2024-12-02 15:29:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 217 transitions. [2024-12-02 15:29:59,095 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 217 transitions. Word has length 99 [2024-12-02 15:29:59,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:29:59,096 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 217 transitions. [2024-12-02 15:29:59,096 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) [2024-12-02 15:29:59,096 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 217 transitions. [2024-12-02 15:29:59,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2024-12-02 15:29:59,098 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:29:59,098 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] [2024-12-02 15:29:59,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 15:29:59,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:29:59,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:29:59,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:29:59,299 INFO L85 PathProgramCache]: Analyzing trace with hash 600120547, now seen corresponding path program 2 times [2024-12-02 15:29:59,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:29:59,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124619081] [2024-12-02 15:29:59,299 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:29:59,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:03,812 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:30:03,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:30:05,476 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2024-12-02 15:30:05,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:05,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124619081] [2024-12-02 15:30:05,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124619081] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:30:05,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:30:05,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 15:30:05,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599508845] [2024-12-02 15:30:05,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:30:05,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 15:30:05,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:30:05,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 15:30:05,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 15:30:05,478 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) [2024-12-02 15:30:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:30:06,845 INFO L93 Difference]: Finished difference Result 285 states and 371 transitions. [2024-12-02 15:30:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:30:06,846 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 [2024-12-02 15:30:06,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:30:06,848 INFO L225 Difference]: With dead ends: 285 [2024-12-02 15:30:06,848 INFO L226 Difference]: Without dead ends: 166 [2024-12-02 15:30:06,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 15:30:06,849 INFO L435 NwaCegarLoop]: 188 mSDtfsCounter, 62 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:30:06,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 1392 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 15:30:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-12-02 15:30:06,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2024-12-02 15:30:06,864 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) [2024-12-02 15:30:06,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 213 transitions. [2024-12-02 15:30:06,866 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 213 transitions. Word has length 114 [2024-12-02 15:30:06,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:30:06,866 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 213 transitions. [2024-12-02 15:30:06,866 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) [2024-12-02 15:30:06,866 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 213 transitions. [2024-12-02 15:30:06,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-12-02 15:30:06,868 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:30:06,868 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] [2024-12-02 15:30:06,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 15:30:06,869 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 15:30:06,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:30:06,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1457916555, now seen corresponding path program 1 times [2024-12-02 15:30:06,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:30:06,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383557002] [2024-12-02 15:30:06,869 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:30:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:30:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2024-12-02 15:30:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:30:20,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383557002] [2024-12-02 15:30:20,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383557002] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:30:20,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367128539] [2024-12-02 15:30:20,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:30:20,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:30:20,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:30:20,315 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:30:20,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c173e69-7abd-4942-8239-f84b84c72931/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process