./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/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 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:37:17,044 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:37:17,148 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:37:17,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:37:17,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:37:17,203 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:37:17,203 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:37:17,204 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:37:17,204 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:37:17,204 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:37:17,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:37:17,204 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:37:17,205 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:37:17,205 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:37:17,206 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:37:17,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:37:17,207 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:37:17,208 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:17,208 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:37:17,208 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:17,209 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:37:17,209 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:37:17,210 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:37:17,210 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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/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 -> 5ba879a31f48d1f1f7d1dc7f928910bfb7ed0629fadb04ed483f94e60bfd5ef0 [2024-11-28 02:37:17,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:37:17,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:37:17,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:37:17,538 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:37:17,538 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:37:17,539 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2024-11-28 02:37:20,508 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/data/e37f5a579/694d188a267d4061bccad3dd25ffeab9/FLAG3417891a2 [2024-11-28 02:37:21,097 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:37:21,097 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i [2024-11-28 02:37:21,160 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/data/e37f5a579/694d188a267d4061bccad3dd25ffeab9/FLAG3417891a2 [2024-11-28 02:37:21,187 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/data/e37f5a579/694d188a267d4061bccad3dd25ffeab9 [2024-11-28 02:37:21,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:37:21,193 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:37:21,195 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:21,196 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:37:21,202 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:37:21,203 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:21" (1/1) ... [2024-11-28 02:37:21,206 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e05a243 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:21, skipping insertion in model container [2024-11-28 02:37:21,206 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:37:21" (1/1) ... [2024-11-28 02:37:21,330 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:37:21,593 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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2024-11-28 02:37:21,601 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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2024-11-28 02:37:22,625 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,626 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,626 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,628 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,629 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,651 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,652 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,654 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,655 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:22,659 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,348 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,366 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,433 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:23,505 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:37:23,520 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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4497,4510] [2024-11-28 02:37:23,521 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_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/sv-benchmarks/c/aws-c-common/aws_array_list_clean_up_harness.i[4557,4570] [2024-11-28 02:37:23,652 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,657 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,658 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,675 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,677 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,679 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,679 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,681 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,683 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,683 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,776 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,782 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:37:23,793 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7529-7540] [2024-11-28 02:37:23,816 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:37:24,049 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:37:24,049 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24 WrapperNode [2024-11-28 02:37:24,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:37:24,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:24,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:37:24,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:37:24,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,178 INFO L138 Inliner]: procedures = 679, calls = 1548, calls flagged for inlining = 48, calls inlined = 7, statements flattened = 575 [2024-11-28 02:37:24,179 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:37:24,180 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:37:24,180 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:37:24,180 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:37:24,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,204 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,290 INFO L175 MemorySlicer]: Split 277 memory accesses to 5 slices as follows [2, 238, 3, 6, 28]. 86 percent of accesses are in the largest equivalence class. The 19 initializations are split as follows [2, 6, 1, 5, 5]. The 237 writes are split as follows [0, 232, 1, 0, 4]. [2024-11-28 02:37:24,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,332 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,337 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,345 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,358 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,380 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:37:24,383 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:37:24,384 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:37:24,384 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:37:24,385 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (1/1) ... [2024-11-28 02:37:24,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:37:24,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:24,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:37:24,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:37:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2024-11-28 02:37:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2024-11-28 02:37:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:37:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-28 02:37:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-28 02:37:24,470 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-28 02:37:24,470 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:37:24,471 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:37:24,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-28 02:37:24,472 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:37:24,472 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:37:24,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:37:24,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:37:24,473 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-28 02:37:24,473 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 02:37:24,473 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 02:37:24,473 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#4 [2024-11-28 02:37:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 02:37:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 02:37:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 02:37:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2024-11-28 02:37:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#4 [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:37:24,474 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:37:24,474 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 02:37:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-28 02:37:24,475 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:37:24,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:37:24,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:37:24,838 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:37:24,842 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:37:31,499 INFO L? ?]: Removed 97 outVars from TransFormulas that were not future-live. [2024-11-28 02:37:31,500 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:37:31,516 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:37:31,517 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:37:31,518 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:31 BoogieIcfgContainer [2024-11-28 02:37:31,518 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:37:31,520 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:37:31,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:37:31,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:37:31,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:37:21" (1/3) ... [2024-11-28 02:37:31,527 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27fdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:31, skipping insertion in model container [2024-11-28 02:37:31,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:37:24" (2/3) ... [2024-11-28 02:37:31,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e27fdac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:37:31, skipping insertion in model container [2024-11-28 02:37:31,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:37:31" (3/3) ... [2024-11-28 02:37:31,531 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_clean_up_harness.i [2024-11-28 02:37:31,550 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:37:31,551 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_clean_up_harness.i that has 18 procedures, 130 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 02:37:31,622 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:37:31,637 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;@4d5d9b6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:37:31,637 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:37:31,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 02:37:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 02:37:31,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:37:31,656 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-28 02:37:31,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:37:31,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1879545209, now seen corresponding path program 1 times [2024-11-28 02:37:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:31,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256707642] [2024-11-28 02:37:31,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:38,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:37:39,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:39,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256707642] [2024-11-28 02:37:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256707642] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:37:39,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873645032] [2024-11-28 02:37:39,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:39,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:37:39,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:37:39,525 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:37:39,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:37:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:46,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 3960 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:37:46,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:37:46,788 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-28 02:37:46,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:37:46,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873645032] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:46,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:37:46,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:37:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896622842] [2024-11-28 02:37:46,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:46,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:37:46,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:46,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:37:46,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:37:46,817 INFO L87 Difference]: Start difference. First operand has 114 states, 78 states have (on average 1.2564102564102564) internal successors, (98), 78 states have internal predecessors, (98), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:37:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:37:46,851 INFO L93 Difference]: Finished difference Result 221 states and 288 transitions. [2024-11-28 02:37:46,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:37:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2024-11-28 02:37:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:37:46,860 INFO L225 Difference]: With dead ends: 221 [2024-11-28 02:37:46,860 INFO L226 Difference]: Without dead ends: 107 [2024-11-28 02:37:46,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:37:46,866 INFO L435 NwaCegarLoop]: 137 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, 137 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:37:46,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:37:46,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2024-11-28 02:37:46,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2024-11-28 02:37:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.2083333333333333) internal successors, (87), 72 states have internal predecessors, (87), 22 states have call successors, (22), 13 states have call predecessors, (22), 12 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-28 02:37:46,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 130 transitions. [2024-11-28 02:37:46,916 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 130 transitions. Word has length 65 [2024-11-28 02:37:46,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:37:46,916 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 130 transitions. [2024-11-28 02:37:46,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.5) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-28 02:37:46,917 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 130 transitions. [2024-11-28 02:37:46,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 02:37:46,921 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:37:46,921 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:46,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:37:47,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 02:37:47,122 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:37:47,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:47,123 INFO L85 PathProgramCache]: Analyzing trace with hash -611566575, now seen corresponding path program 1 times [2024-11-28 02:37:47,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:47,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329807327] [2024-11-28 02:37:47,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:47,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:37:53,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:37:54,354 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:37:54,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:37:54,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329807327] [2024-11-28 02:37:54,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329807327] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:37:54,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:37:54,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:37:54,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939150127] [2024-11-28 02:37:54,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:37:54,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:37:54,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:37:54,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:37:54,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:37:54,359 INFO L87 Difference]: Start difference. First operand 107 states and 130 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:37:54,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:37:54,790 INFO L93 Difference]: Finished difference Result 182 states and 221 transitions. [2024-11-28 02:37:54,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:37:54,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2024-11-28 02:37:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:37:54,797 INFO L225 Difference]: With dead ends: 182 [2024-11-28 02:37:54,798 INFO L226 Difference]: Without dead ends: 109 [2024-11-28 02:37:54,799 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:37:54,801 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 31 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:37:54,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 427 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:37:54,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2024-11-28 02:37:54,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2024-11-28 02:37:54,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 74 states have internal predecessors, (88), 22 states have call successors, (22), 13 states have call predecessors, (22), 13 states have return successors, (22), 21 states have call predecessors, (22), 21 states have call successors, (22) [2024-11-28 02:37:54,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 132 transitions. [2024-11-28 02:37:54,833 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 132 transitions. Word has length 71 [2024-11-28 02:37:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:37:54,835 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 132 transitions. [2024-11-28 02:37:54,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-28 02:37:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 132 transitions. [2024-11-28 02:37:54,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 02:37:54,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:37:54,843 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:37:54,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:37:54,843 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:37:54,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:37:54,844 INFO L85 PathProgramCache]: Analyzing trace with hash 528916797, now seen corresponding path program 1 times [2024-11-28 02:37:54,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:37:54,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424322943] [2024-11-28 02:37:54,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:37:54,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:00,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-28 02:38:03,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:03,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424322943] [2024-11-28 02:38:03,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424322943] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:03,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:38:03,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:38:03,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879615758] [2024-11-28 02:38:03,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:03,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:38:03,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:03,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:38:03,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:03,699 INFO L87 Difference]: Start difference. First operand 109 states and 132 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 02:38:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:03,928 INFO L93 Difference]: Finished difference Result 116 states and 139 transitions. [2024-11-28 02:38:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:38:03,929 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 86 [2024-11-28 02:38:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:03,933 INFO L225 Difference]: With dead ends: 116 [2024-11-28 02:38:03,933 INFO L226 Difference]: Without dead ends: 111 [2024-11-28 02:38:03,936 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:38:03,937 INFO L435 NwaCegarLoop]: 129 mSDtfsCounter, 1 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:03,937 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 640 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:38:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-28 02:38:03,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2024-11-28 02:38:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 76 states have internal predecessors, (89), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-28 02:38:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 134 transitions. [2024-11-28 02:38:03,964 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 134 transitions. Word has length 86 [2024-11-28 02:38:03,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:03,968 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 134 transitions. [2024-11-28 02:38:03,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-28 02:38:03,968 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 134 transitions. [2024-11-28 02:38:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 02:38:03,970 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:03,971 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:03,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:38:03,975 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:03,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1797500432, now seen corresponding path program 1 times [2024-11-28 02:38:03,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:03,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367709778] [2024-11-28 02:38:03,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:03,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:38:11,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:11,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367709778] [2024-11-28 02:38:11,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367709778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:11,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2038769300] [2024-11-28 02:38:11,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:11,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:11,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:11,301 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:11,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:38:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:17,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 4115 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:38:17,724 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:17,928 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 02:38:17,929 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:17,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2038769300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:17,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:38:17,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:38:17,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910258228] [2024-11-28 02:38:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:17,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:38:17,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:17,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:38:17,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:17,932 INFO L87 Difference]: Start difference. First operand 111 states and 134 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:38:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:18,019 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2024-11-28 02:38:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:38:18,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 87 [2024-11-28 02:38:18,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:18,022 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:38:18,022 INFO L226 Difference]: Without dead ends: 112 [2024-11-28 02:38:18,022 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:18,023 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:18,024 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 382 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:38:18,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2024-11-28 02:38:18,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2024-11-28 02:38:18,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 75 states have (on average 1.2) internal successors, (90), 77 states have internal predecessors, (90), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-28 02:38:18,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 135 transitions. [2024-11-28 02:38:18,049 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 135 transitions. Word has length 87 [2024-11-28 02:38:18,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:18,050 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 135 transitions. [2024-11-28 02:38:18,050 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:38:18,050 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 135 transitions. [2024-11-28 02:38:18,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 02:38:18,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:18,052 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:18,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:38:18,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:18,257 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:18,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:18,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1793136237, now seen corresponding path program 1 times [2024-11-28 02:38:18,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:18,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100914275] [2024-11-28 02:38:18,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:18,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:25,879 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:38:25,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100914275] [2024-11-28 02:38:25,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100914275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:25,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [197591204] [2024-11-28 02:38:25,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:25,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:25,883 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:25,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:38:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:32,222 INFO L256 TraceCheckSpWp]: Trace formula consists of 4134 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:38:32,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:32,447 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:38:32,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:32,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [197591204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:32,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:38:32,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 02:38:32,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937586825] [2024-11-28 02:38:32,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:32,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:38:32,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:32,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:38:32,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:32,449 INFO L87 Difference]: Start difference. First operand 112 states and 135 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:38:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:32,630 INFO L93 Difference]: Finished difference Result 195 states and 233 transitions. [2024-11-28 02:38:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:38:32,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 88 [2024-11-28 02:38:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:32,634 INFO L225 Difference]: With dead ends: 195 [2024-11-28 02:38:32,635 INFO L226 Difference]: Without dead ends: 117 [2024-11-28 02:38:32,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:38:32,636 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 4 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:32,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 368 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:38:32,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-28 02:38:32,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2024-11-28 02:38:32,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 76 states have (on average 1.1973684210526316) internal successors, (91), 78 states have internal predecessors, (91), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 21 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-28 02:38:32,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 136 transitions. [2024-11-28 02:38:32,653 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 136 transitions. Word has length 88 [2024-11-28 02:38:32,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:32,653 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 136 transitions. [2024-11-28 02:38:32,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:38:32,654 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 136 transitions. [2024-11-28 02:38:32,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:38:32,656 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:32,656 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:32,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:38:32,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:32,857 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:32,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:32,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1665013952, now seen corresponding path program 1 times [2024-11-28 02:38:32,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:32,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792011203] [2024-11-28 02:38:32,857 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:32,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 02:38:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792011203] [2024-11-28 02:38:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792011203] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590884273] [2024-11-28 02:38:39,561 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:39,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:39,568 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:39,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:38:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:46,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 4137 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:38:46,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:38:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 02:38:46,413 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:38:46,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590884273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:38:46,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:38:46,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-28 02:38:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439030389] [2024-11-28 02:38:46,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:38:46,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:38:46,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:38:46,415 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:38:46,415 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:46,415 INFO L87 Difference]: Start difference. First operand 113 states and 136 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:38:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:38:46,567 INFO L93 Difference]: Finished difference Result 158 states and 188 transitions. [2024-11-28 02:38:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:38:46,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 89 [2024-11-28 02:38:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:38:46,569 INFO L225 Difference]: With dead ends: 158 [2024-11-28 02:38:46,569 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 02:38:46,569 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:38:46,570 INFO L435 NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:38:46,570 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:38:46,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 02:38:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-28 02:38:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 78 states have (on average 1.1923076923076923) internal successors, (93), 79 states have internal predecessors, (93), 22 states have call successors, (22), 13 states have call predecessors, (22), 14 states have return successors, (23), 22 states have call predecessors, (23), 21 states have call successors, (23) [2024-11-28 02:38:46,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 138 transitions. [2024-11-28 02:38:46,580 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 138 transitions. Word has length 89 [2024-11-28 02:38:46,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:38:46,580 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 138 transitions. [2024-11-28 02:38:46,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-28 02:38:46,581 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 138 transitions. [2024-11-28 02:38:46,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 02:38:46,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:38:46,582 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:38:46,605 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:38:46,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 02:38:46,783 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:38:46,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:38:46,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1262646261, now seen corresponding path program 1 times [2024-11-28 02:38:46,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:38:46,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357630019] [2024-11-28 02:38:46,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:46,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:38:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:38:54,032 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:38:54,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:38:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357630019] [2024-11-28 02:38:54,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357630019] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:38:54,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906961252] [2024-11-28 02:38:54,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:38:54,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:38:54,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:38:54,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:38:54,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:39:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:39:07,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 4141 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 02:39:07,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:39:12,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-28 02:39:14,117 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 02:39:14,117 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:39:21,873 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-11-28 02:39:21,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2024-11-28 02:39:22,745 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 02:39:22,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906961252] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:22,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:39:22,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [5, 22] total 38 [2024-11-28 02:39:22,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292566798] [2024-11-28 02:39:22,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:39:22,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:39:22,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:39:22,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:39:22,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1250, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 02:39:22,749 INFO L87 Difference]: Start difference. First operand 115 states and 138 transitions. Second operand has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 12 states have internal predecessors, (57), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 02:39:33,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:39:33,561 INFO L93 Difference]: Finished difference Result 124 states and 148 transitions. [2024-11-28 02:39:33,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:39:33,562 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 12 states have internal predecessors, (57), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 91 [2024-11-28 02:39:33,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:39:33,564 INFO L225 Difference]: With dead ends: 124 [2024-11-28 02:39:33,564 INFO L226 Difference]: Without dead ends: 119 [2024-11-28 02:39:33,566 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 150 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 512 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 02:39:33,567 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 90 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:39:33,567 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 302 Invalid, 879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2024-11-28 02:39:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-28 02:39:33,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-28 02:39:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 83 states have internal predecessors, (97), 22 states have call successors, (22), 13 states have call predecessors, (22), 15 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2024-11-28 02:39:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 143 transitions. [2024-11-28 02:39:33,591 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 143 transitions. Word has length 91 [2024-11-28 02:39:33,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:39:33,592 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 143 transitions. [2024-11-28 02:39:33,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.071428571428571) internal successors, (57), 12 states have internal predecessors, (57), 5 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-28 02:39:33,593 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 143 transitions. [2024-11-28 02:39:33,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:39:33,597 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:39:33,597 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:39:33,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:39:33,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:39:33,798 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:39:33,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:39:33,798 INFO L85 PathProgramCache]: Analyzing trace with hash -271322825, now seen corresponding path program 2 times [2024-11-28 02:39:33,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:39:33,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426345542] [2024-11-28 02:39:33,798 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:39:33,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:39:40,807 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:39:40,807 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:39:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-28 02:39:42,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:39:42,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426345542] [2024-11-28 02:39:42,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426345542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:39:42,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63499438] [2024-11-28 02:39:42,841 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:39:42,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:39:42,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:39:42,844 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:39:42,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1ced88eb-4a06-4d2b-b442-87c8d2572d9d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process