./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC --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 14628bdc2b5dee98fd531ba30b57569c060efa6ead93e7c2de47c8a88cf53b5a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:20:02,160 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:20:02,253 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-24 00:20:02,259 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:20:02,260 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:20:02,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:20:02,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:20:02,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:20:02,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:20:02,292 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:20:02,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:20:02,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:20:02,293 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:20:02,293 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:20:02,293 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:20:02,293 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:20:02,294 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:20:02,294 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:20:02,294 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:20:02,294 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:20:02,294 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:20:02,294 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:20:02,295 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:20:02,295 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:20:02,295 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:20:02,295 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:20:02,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:02,295 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:02,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:02,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:02,296 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:20:02,296 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:20:02,296 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:20:02,297 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:20:02,297 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:02,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:20:02,297 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:20:02,297 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:20:02,297 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:20:02,298 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:20:02,298 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:20:02,298 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:20:02,298 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:20:02,298 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:20:02,298 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:20:02,298 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_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC 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 -> 14628bdc2b5dee98fd531ba30b57569c060efa6ead93e7c2de47c8a88cf53b5a [2024-11-24 00:20:02,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:20:02,710 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:20:02,712 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:20:02,715 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:20:02,716 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:20:02,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2024-11-24 00:20:05,813 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/data/ac203be2b/8b0564b9cb1a4a2c84c08d15ca15de54/FLAG37981c2a5 [2024-11-24 00:20:06,517 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:20:06,518 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i [2024-11-24 00:20:06,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/data/ac203be2b/8b0564b9cb1a4a2c84c08d15ca15de54/FLAG37981c2a5 [2024-11-24 00:20:06,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/data/ac203be2b/8b0564b9cb1a4a2c84c08d15ca15de54 [2024-11-24 00:20:06,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:20:06,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:20:06,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:06,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:20:06,579 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:20:06,580 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:06" (1/1) ... [2024-11-24 00:20:06,581 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215b953d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:06, skipping insertion in model container [2024-11-24 00:20:06,581 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:20:06" (1/1) ... [2024-11-24 00:20:06,689 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:20:06,972 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_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2024-11-24 00:20:06,981 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_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2024-11-24 00:20:08,085 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,086 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,087 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,093 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,094 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,112 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,113 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,115 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,116 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,118 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,120 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,121 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,851 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,860 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,931 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,931 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,932 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:08,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:09,016 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:20:09,036 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_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4495,4508] [2024-11-24 00:20:09,039 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_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/sv-benchmarks/c/aws-c-common/aws_array_list_set_at_harness.i[4555,4568] [2024-11-24 00:20:09,159 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,160 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,160 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,161 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,162 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,175 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,176 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,179 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,180 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,181 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,181 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,182 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,268 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,278 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,291 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7770-7781] [2024-11-24 00:20:09,322 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,323 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,325 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-24 00:20:09,326 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:20:09,630 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:20:09,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09 WrapperNode [2024-11-24 00:20:09,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:20:09,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:09,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:20:09,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:20:09,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:09,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:09,836 INFO L138 Inliner]: procedures = 680, calls = 1678, calls flagged for inlining = 50, calls inlined = 10, statements flattened = 850 [2024-11-24 00:20:09,837 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:20:09,838 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:20:09,838 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:20:09,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:20:09,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:09,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:09,858 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:09,998 INFO L175 MemorySlicer]: Split 332 memory accesses to 6 slices as follows [2, 238, 72, 6, 6, 8]. 72 percent of accesses are in the largest equivalence class. The 24 initializations are split as follows [2, 6, 10, 1, 0, 5]. The 241 writes are split as follows [0, 232, 6, 1, 2, 0]. [2024-11-24 00:20:09,998 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:09,998 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,054 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,056 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,069 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,094 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:20:10,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:20:10,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:20:10,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:20:10,103 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (1/1) ... [2024-11-24 00:20:10,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:20:10,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:10,168 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:20:10,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:20:10,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:20:10,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2024-11-24 00:20:10,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2024-11-24 00:20:10,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2024-11-24 00:20:10,211 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2024-11-24 00:20:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-24 00:20:10,212 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-24 00:20:10,212 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2024-11-24 00:20:10,212 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:20:10,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2024-11-24 00:20:10,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:20:10,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-24 00:20:10,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-24 00:20:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-24 00:20:10,215 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2024-11-24 00:20:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2024-11-24 00:20:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:20:10,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:20:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-24 00:20:10,218 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-24 00:20:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-24 00:20:10,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-24 00:20:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2024-11-24 00:20:10,218 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2024-11-24 00:20:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2024-11-24 00:20:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2024-11-24 00:20:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-24 00:20:10,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-24 00:20:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2024-11-24 00:20:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:20:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2024-11-24 00:20:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2024-11-24 00:20:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2024-11-24 00:20:10,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-24 00:20:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-24 00:20:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-24 00:20:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-24 00:20:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-24 00:20:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-24 00:20:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-24 00:20:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-24 00:20:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-24 00:20:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2024-11-24 00:20:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2024-11-24 00:20:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-24 00:20:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2024-11-24 00:20:10,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_set_at [2024-11-24 00:20:10,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_set_at [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-24 00:20:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-24 00:20:10,699 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:20:10,702 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:20:17,502 INFO L? ?]: Removed 167 outVars from TransFormulas that were not future-live. [2024-11-24 00:20:17,502 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:20:17,522 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:20:17,522 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 00:20:17,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:17 BoogieIcfgContainer [2024-11-24 00:20:17,523 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:20:17,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:20:17,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:20:17,533 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:20:17,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:20:06" (1/3) ... [2024-11-24 00:20:17,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36356659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:17, skipping insertion in model container [2024-11-24 00:20:17,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:20:09" (2/3) ... [2024-11-24 00:20:17,534 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36356659 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:20:17, skipping insertion in model container [2024-11-24 00:20:17,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:20:17" (3/3) ... [2024-11-24 00:20:17,536 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_array_list_set_at_harness.i [2024-11-24 00:20:17,556 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:20:17,558 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_array_list_set_at_harness.i that has 24 procedures, 288 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-24 00:20:17,660 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:20:17,678 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;@498fb9d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:20:17,679 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:20:17,686 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 167 states have (on average 1.215568862275449) internal successors, (203), 169 states have internal predecessors, (203), 96 states have call successors, (96), 23 states have call predecessors, (96), 23 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) [2024-11-24 00:20:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 00:20:17,709 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:17,710 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:17,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:17,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:17,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1931342552, now seen corresponding path program 1 times [2024-11-24 00:20:17,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064279565] [2024-11-24 00:20:17,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:17,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:27,692 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-24 00:20:27,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:27,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064279565] [2024-11-24 00:20:27,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064279565] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:27,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139001031] [2024-11-24 00:20:27,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:27,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:27,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:27,702 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:27,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:20:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:35,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 4469 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 00:20:35,611 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:36,128 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2024-11-24 00:20:36,128 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:20:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139001031] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:20:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-24 00:20:36,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052810561] [2024-11-24 00:20:36,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:36,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:20:36,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:36,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:20:36,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:20:36,163 INFO L87 Difference]: Start difference. First operand has 288 states, 167 states have (on average 1.215568862275449) internal successors, (203), 169 states have internal predecessors, (203), 96 states have call successors, (96), 23 states have call predecessors, (96), 23 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96) Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-24 00:20:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:20:38,571 INFO L93 Difference]: Finished difference Result 571 states and 858 transitions. [2024-11-24 00:20:38,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:20:38,574 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 156 [2024-11-24 00:20:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:20:38,588 INFO L225 Difference]: With dead ends: 571 [2024-11-24 00:20:38,588 INFO L226 Difference]: Without dead ends: 285 [2024-11-24 00:20:38,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-11-24 00:20:38,599 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 408 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:20:38,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1260 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-24 00:20:38,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-24 00:20:38,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-24 00:20:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 167 states have internal predecessors, (198), 96 states have call successors, (96), 23 states have call predecessors, (96), 24 states have return successors, (111), 95 states have call predecessors, (111), 95 states have call successors, (111) [2024-11-24 00:20:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 405 transitions. [2024-11-24 00:20:38,724 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 405 transitions. Word has length 156 [2024-11-24 00:20:38,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:20:38,727 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 405 transitions. [2024-11-24 00:20:38,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2024-11-24 00:20:38,728 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 405 transitions. [2024-11-24 00:20:38,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-11-24 00:20:38,736 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:20:38,736 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:20:38,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:20:38,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-24 00:20:38,938 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:20:38,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:20:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 2015842466, now seen corresponding path program 1 times [2024-11-24 00:20:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:20:38,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130759038] [2024-11-24 00:20:38,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:38,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:20:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:49,009 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2024-11-24 00:20:49,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:20:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130759038] [2024-11-24 00:20:49,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130759038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:20:49,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743453569] [2024-11-24 00:20:49,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:20:49,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:20:49,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:20:49,013 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:20:49,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:20:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:20:56,428 INFO L256 TraceCheckSpWp]: Trace formula consists of 4723 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-24 00:20:56,436 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:20:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2024-11-24 00:20:57,726 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:20:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743453569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:20:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:20:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2024-11-24 00:20:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948009133] [2024-11-24 00:20:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:20:57,727 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:20:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:20:57,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:20:57,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:20:57,729 INFO L87 Difference]: Start difference. First operand 285 states and 405 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-24 00:21:01,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:01,801 INFO L93 Difference]: Finished difference Result 514 states and 730 transitions. [2024-11-24 00:21:01,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:21:01,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) Word has length 186 [2024-11-24 00:21:01,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:01,807 INFO L225 Difference]: With dead ends: 514 [2024-11-24 00:21:01,810 INFO L226 Difference]: Without dead ends: 285 [2024-11-24 00:21:01,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:21:01,813 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 464 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:01,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 1622 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 00:21:01,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-24 00:21:01,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-24 00:21:01,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 164 states have (on average 1.2073170731707317) internal successors, (198), 167 states have internal predecessors, (198), 96 states have call successors, (96), 23 states have call predecessors, (96), 24 states have return successors, (107), 95 states have call predecessors, (107), 95 states have call successors, (107) [2024-11-24 00:21:01,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 401 transitions. [2024-11-24 00:21:01,855 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 401 transitions. Word has length 186 [2024-11-24 00:21:01,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:01,856 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 401 transitions. [2024-11-24 00:21:01,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (28), 3 states have call predecessors, (28), 4 states have call successors, (28) [2024-11-24 00:21:01,856 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 401 transitions. [2024-11-24 00:21:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-24 00:21:01,860 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:01,861 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:01,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:21:02,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:02,062 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:02,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:02,062 INFO L85 PathProgramCache]: Analyzing trace with hash 320849307, now seen corresponding path program 2 times [2024-11-24 00:21:02,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:02,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838008749] [2024-11-24 00:21:02,063 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:21:02,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:07,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-24 00:21:07,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:08,405 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-24 00:21:08,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838008749] [2024-11-24 00:21:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838008749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:08,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:21:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921567761] [2024-11-24 00:21:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:08,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:21:08,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:08,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:21:08,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:21:08,411 INFO L87 Difference]: Start difference. First operand 285 states and 401 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-24 00:21:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:08,617 INFO L93 Difference]: Finished difference Result 496 states and 688 transitions. [2024-11-24 00:21:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:21:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 201 [2024-11-24 00:21:08,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:08,628 INFO L225 Difference]: With dead ends: 496 [2024-11-24 00:21:08,628 INFO L226 Difference]: Without dead ends: 290 [2024-11-24 00:21:08,629 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 [2024-11-24 00:21:08,631 INFO L435 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:08,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1534 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:21:08,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-24 00:21:08,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-24 00:21:08,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 168 states have (on average 1.2023809523809523) internal successors, (202), 171 states have internal predecessors, (202), 96 states have call successors, (96), 23 states have call predecessors, (96), 25 states have return successors, (109), 96 states have call predecessors, (109), 95 states have call successors, (109) [2024-11-24 00:21:08,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 407 transitions. [2024-11-24 00:21:08,692 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 407 transitions. Word has length 201 [2024-11-24 00:21:08,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:08,692 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 407 transitions. [2024-11-24 00:21:08,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2024-11-24 00:21:08,693 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 407 transitions. [2024-11-24 00:21:08,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-24 00:21:08,699 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:08,700 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:08,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:21:08,700 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:08,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:08,701 INFO L85 PathProgramCache]: Analyzing trace with hash 778665137, now seen corresponding path program 1 times [2024-11-24 00:21:08,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:08,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96718434] [2024-11-24 00:21:08,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:08,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-24 00:21:17,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96718434] [2024-11-24 00:21:17,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96718434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:17,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500524995] [2024-11-24 00:21:17,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:17,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:17,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:17,504 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:17,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:21:24,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:24,734 INFO L256 TraceCheckSpWp]: Trace formula consists of 4854 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 00:21:24,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-24 00:21:26,386 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:21:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500524995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:26,386 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:21:26,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2024-11-24 00:21:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100769640] [2024-11-24 00:21:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:26,387 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:21:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:26,388 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:21:26,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:21:26,389 INFO L87 Difference]: Start difference. First operand 290 states and 407 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-24 00:21:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:31,400 INFO L93 Difference]: Finished difference Result 518 states and 724 transitions. [2024-11-24 00:21:31,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:21:31,401 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) Word has length 207 [2024-11-24 00:21:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:31,408 INFO L225 Difference]: With dead ends: 518 [2024-11-24 00:21:31,408 INFO L226 Difference]: Without dead ends: 290 [2024-11-24 00:21:31,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:21:31,415 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 500 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 1848 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:31,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 1848 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 00:21:31,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-24 00:21:31,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-24 00:21:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 168 states have (on average 1.2023809523809523) internal successors, (202), 171 states have internal predecessors, (202), 96 states have call successors, (96), 23 states have call predecessors, (96), 25 states have return successors, (103), 96 states have call predecessors, (103), 95 states have call successors, (103) [2024-11-24 00:21:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 401 transitions. [2024-11-24 00:21:31,452 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 401 transitions. Word has length 207 [2024-11-24 00:21:31,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:31,453 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 401 transitions. [2024-11-24 00:21:31,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 5 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 5 states have call successors, (29) [2024-11-24 00:21:31,454 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 401 transitions. [2024-11-24 00:21:31,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 00:21:31,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:31,459 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:31,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:21:31,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:31,660 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:31,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:31,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1917411246, now seen corresponding path program 2 times [2024-11-24 00:21:31,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:31,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355105612] [2024-11-24 00:21:31,664 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:21:31,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:37,314 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:21:37,315 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:21:39,914 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2024-11-24 00:21:39,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:39,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355105612] [2024-11-24 00:21:39,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355105612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:39,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:21:39,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:21:39,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939420777] [2024-11-24 00:21:39,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:39,917 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:21:39,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:39,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:21:39,918 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:21:39,921 INFO L87 Difference]: Start difference. First operand 290 states and 401 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-24 00:21:40,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:21:40,313 INFO L93 Difference]: Finished difference Result 571 states and 795 transitions. [2024-11-24 00:21:40,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:21:40,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) Word has length 222 [2024-11-24 00:21:40,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:21:40,318 INFO L225 Difference]: With dead ends: 571 [2024-11-24 00:21:40,321 INFO L226 Difference]: Without dead ends: 332 [2024-11-24 00:21:40,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:21:40,324 INFO L435 NwaCegarLoop]: 396 mSDtfsCounter, 23 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:21:40,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 2360 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:21:40,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-24 00:21:40,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 306. [2024-11-24 00:21:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 178 states have (on average 1.196629213483146) internal successors, (213), 181 states have internal predecessors, (213), 101 states have call successors, (101), 23 states have call predecessors, (101), 26 states have return successors, (110), 102 states have call predecessors, (110), 100 states have call successors, (110) [2024-11-24 00:21:40,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 424 transitions. [2024-11-24 00:21:40,366 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 424 transitions. Word has length 222 [2024-11-24 00:21:40,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:21:40,367 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 424 transitions. [2024-11-24 00:21:40,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (29), 4 states have call predecessors, (29), 3 states have call successors, (29) [2024-11-24 00:21:40,368 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 424 transitions. [2024-11-24 00:21:40,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-24 00:21:40,371 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:21:40,372 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:21:40,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:21:40,372 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:21:40,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:21:40,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1754274448, now seen corresponding path program 1 times [2024-11-24 00:21:40,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:21:40,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662064622] [2024-11-24 00:21:40,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:40,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:21:46,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:49,272 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2024-11-24 00:21:49,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:21:49,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662064622] [2024-11-24 00:21:49,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662064622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:21:49,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120228213] [2024-11-24 00:21:49,273 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:21:49,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:21:49,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:21:49,276 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:21:49,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:21:56,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:21:56,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 4978 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:21:56,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:21:58,336 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2024-11-24 00:21:58,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:21:58,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120228213] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:21:58,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:21:58,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 20 [2024-11-24 00:21:58,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452065012] [2024-11-24 00:21:58,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:21:58,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:21:58,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:21:58,339 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:21:58,339 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:21:58,339 INFO L87 Difference]: Start difference. First operand 306 states and 424 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 6 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2024-11-24 00:22:04,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:04,119 INFO L93 Difference]: Finished difference Result 534 states and 733 transitions. [2024-11-24 00:22:04,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:22:04,120 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 6 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) Word has length 222 [2024-11-24 00:22:04,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:04,124 INFO L225 Difference]: With dead ends: 534 [2024-11-24 00:22:04,124 INFO L226 Difference]: Without dead ends: 306 [2024-11-24 00:22:04,126 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2024-11-24 00:22:04,126 INFO L435 NwaCegarLoop]: 289 mSDtfsCounter, 510 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:04,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 2124 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-24 00:22:04,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2024-11-24 00:22:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2024-11-24 00:22:04,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 178 states have (on average 1.196629213483146) internal successors, (213), 181 states have internal predecessors, (213), 101 states have call successors, (101), 23 states have call predecessors, (101), 26 states have return successors, (106), 102 states have call predecessors, (106), 100 states have call successors, (106) [2024-11-24 00:22:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 420 transitions. [2024-11-24 00:22:04,153 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 420 transitions. Word has length 222 [2024-11-24 00:22:04,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:04,154 INFO L471 AbstractCegarLoop]: Abstraction has 306 states and 420 transitions. [2024-11-24 00:22:04,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 9 states have internal predecessors, (79), 6 states have call successors, (31), 3 states have call predecessors, (31), 3 states have return successors, (29), 5 states have call predecessors, (29), 6 states have call successors, (29) [2024-11-24 00:22:04,154 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 420 transitions. [2024-11-24 00:22:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 00:22:04,159 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:04,159 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:04,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:22:04,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-24 00:22:04,360 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:04,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:04,360 INFO L85 PathProgramCache]: Analyzing trace with hash 302106328, now seen corresponding path program 1 times [2024-11-24 00:22:04,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:04,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858840872] [2024-11-24 00:22:04,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:04,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:12,893 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2024-11-24 00:22:12,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:12,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858840872] [2024-11-24 00:22:12,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858840872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:22:12,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:22:12,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 00:22:12,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242786148] [2024-11-24 00:22:12,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:22:12,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 00:22:12,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:12,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 00:22:12,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-24 00:22:12,896 INFO L87 Difference]: Start difference. First operand 306 states and 420 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-24 00:22:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:22:13,738 INFO L93 Difference]: Finished difference Result 653 states and 918 transitions. [2024-11-24 00:22:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:22:13,739 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) Word has length 252 [2024-11-24 00:22:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:22:13,745 INFO L225 Difference]: With dead ends: 653 [2024-11-24 00:22:13,745 INFO L226 Difference]: Without dead ends: 419 [2024-11-24 00:22:13,747 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:22:13,748 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 131 mSDsluCounter, 2771 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 3171 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-24 00:22:13,749 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 3171 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-24 00:22:13,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-24 00:22:13,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 396. [2024-11-24 00:22:13,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 225 states have (on average 1.208888888888889) internal successors, (272), 228 states have internal predecessors, (272), 143 states have call successors, (143), 24 states have call predecessors, (143), 27 states have return successors, (150), 144 states have call predecessors, (150), 142 states have call successors, (150) [2024-11-24 00:22:13,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 565 transitions. [2024-11-24 00:22:13,794 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 565 transitions. Word has length 252 [2024-11-24 00:22:13,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:22:13,795 INFO L471 AbstractCegarLoop]: Abstraction has 396 states and 565 transitions. [2024-11-24 00:22:13,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 7 states have internal predecessors, (70), 4 states have call successors, (31), 3 states have call predecessors, (31), 2 states have return successors, (29), 5 states have call predecessors, (29), 4 states have call successors, (29) [2024-11-24 00:22:13,795 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 565 transitions. [2024-11-24 00:22:13,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2024-11-24 00:22:13,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:22:13,802 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:22:13,802 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:22:13,802 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:22:13,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:22:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1005036070, now seen corresponding path program 1 times [2024-11-24 00:22:13,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:22:13,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955447657] [2024-11-24 00:22:13,803 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:13,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:22:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:29,778 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 9 proven. 21 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2024-11-24 00:22:29,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:22:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955447657] [2024-11-24 00:22:29,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955447657] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:29,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2072471732] [2024-11-24 00:22:29,779 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:22:29,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:22:29,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:22:29,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:22:29,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:22:38,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:22:38,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 5229 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-24 00:22:38,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:22:40,081 WARN L873 $PredicateComparison]: unable to prove that (exists ((v_ensure_array_list_has_allocated_data_member_~list.offset_8 Int)) (and (= (store |c_old(#memory_$Pointer$#2.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#2.base)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8 (select (select |c_#memory_$Pointer$#2.base| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8))) |c_#memory_$Pointer$#2.base|) (<= v_ensure_array_list_has_allocated_data_member_~list.offset_8 |c_ensure_array_list_has_allocated_data_member_#in~list.offset|) (= (store |c_old(#memory_$Pointer$#2.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base| (store (select |c_old(#memory_$Pointer$#2.offset)| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8 (select (select |c_#memory_$Pointer$#2.offset| |c_ensure_array_list_has_allocated_data_member_#in~list.base|) v_ensure_array_list_has_allocated_data_member_~list.offset_8))) |c_#memory_$Pointer$#2.offset|))) is different from true [2024-11-24 00:22:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:22:40,203 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-24 00:22:40,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 00:22:40,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2024-11-24 00:22:41,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 00:22:42,839 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 215 proven. 12 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2024-11-24 00:22:42,839 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:22:48,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2072471732] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:22:48,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:22:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 18 [2024-11-24 00:22:48,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894637283] [2024-11-24 00:22:48,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 00:22:48,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:22:48,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:22:48,622 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:22:48,622 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=480, Unknown=1, NotChecked=44, Total=600 [2024-11-24 00:22:48,623 INFO L87 Difference]: Start difference. First operand 396 states and 565 transitions. Second operand has 18 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 9 states have call successors, (62), 5 states have call predecessors, (62), 7 states have return successors, (60), 7 states have call predecessors, (60), 9 states have call successors, (60) [2024-11-24 00:23:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:23:07,001 INFO L93 Difference]: Finished difference Result 943 states and 1357 transitions. [2024-11-24 00:23:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-24 00:23:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 9 states have call successors, (62), 5 states have call predecessors, (62), 7 states have return successors, (60), 7 states have call predecessors, (60), 9 states have call successors, (60) Word has length 252 [2024-11-24 00:23:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:23:07,005 INFO L225 Difference]: With dead ends: 943 [2024-11-24 00:23:07,006 INFO L226 Difference]: Without dead ends: 533 [2024-11-24 00:23:07,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 461 SyntacticMatches, 7 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=162, Invalid=897, Unknown=1, NotChecked=62, Total=1122 [2024-11-24 00:23:07,009 INFO L435 NwaCegarLoop]: 234 mSDtfsCounter, 257 mSDsluCounter, 1061 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 2805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 550 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:23:07,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 1295 Invalid, 2805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2128 Invalid, 0 Unknown, 550 Unchecked, 16.4s Time] [2024-11-24 00:23:07,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-24 00:23:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 401. [2024-11-24 00:23:07,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 229 states have (on average 1.2008733624454149) internal successors, (275), 232 states have internal predecessors, (275), 142 states have call successors, (142), 26 states have call predecessors, (142), 29 states have return successors, (149), 143 states have call predecessors, (149), 141 states have call successors, (149) [2024-11-24 00:23:07,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 566 transitions. [2024-11-24 00:23:07,072 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 566 transitions. Word has length 252 [2024-11-24 00:23:07,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:23:07,072 INFO L471 AbstractCegarLoop]: Abstraction has 401 states and 566 transitions. [2024-11-24 00:23:07,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 8.6875) internal successors, (139), 16 states have internal predecessors, (139), 9 states have call successors, (62), 5 states have call predecessors, (62), 7 states have return successors, (60), 7 states have call predecessors, (60), 9 states have call successors, (60) [2024-11-24 00:23:07,073 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 566 transitions. [2024-11-24 00:23:07,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2024-11-24 00:23:07,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:23:07,078 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:23:07,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:23:07,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-24 00:23:07,279 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:23:07,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:23:07,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2041390860, now seen corresponding path program 1 times [2024-11-24 00:23:07,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:23:07,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109985144] [2024-11-24 00:23:07,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:07,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:23:14,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:17,085 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 481 trivial. 0 not checked. [2024-11-24 00:23:17,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:23:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109985144] [2024-11-24 00:23:17,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109985144] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:23:17,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703630163] [2024-11-24 00:23:17,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:23:17,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:23:17,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:23:17,088 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:23:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:23:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:23:25,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 5269 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-24 00:23:25,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:23:25,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 00:23:26,673 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 26 treesize of output 14 [2024-11-24 00:23:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2024-11-24 00:23:37,657 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:23:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703630163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:23:37,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:23:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [5] total 21 [2024-11-24 00:23:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653628236] [2024-11-24 00:23:37,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:23:37,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:23:37,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:23:37,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:23:37,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:23:37,661 INFO L87 Difference]: Start difference. First operand 401 states and 566 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 16 states have internal predecessors, (83), 11 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-24 00:23:41,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:23:46,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:03,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:07,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-24 00:24:11,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:16,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:20,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:25,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:31,169 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:39,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:46,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:52,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:24:58,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:25:06,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-24 00:25:12,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:12,848 INFO L93 Difference]: Finished difference Result 1055 states and 1529 transitions. [2024-11-24 00:25:12,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-24 00:25:12,849 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 16 states have internal predecessors, (83), 11 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) Word has length 258 [2024-11-24 00:25:12,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:12,855 INFO L225 Difference]: With dead ends: 1055 [2024-11-24 00:25:12,855 INFO L226 Difference]: Without dead ends: 685 [2024-11-24 00:25:12,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 208 SyntacticMatches, 36 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 346 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:25:12,860 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 493 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 4878 mSolverCounterSat, 360 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2149 SdHoareTripleChecker+Invalid, 5252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 4878 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 92.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:12,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 2149 Invalid, 5252 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [360 Valid, 4878 Invalid, 14 Unknown, 0 Unchecked, 92.8s Time] [2024-11-24 00:25:12,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2024-11-24 00:25:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 674. [2024-11-24 00:25:12,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 385 states have (on average 1.2181818181818183) internal successors, (469), 394 states have internal predecessors, (469), 237 states have call successors, (237), 45 states have call predecessors, (237), 51 states have return successors, (249), 236 states have call predecessors, (249), 235 states have call successors, (249) [2024-11-24 00:25:12,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 955 transitions. [2024-11-24 00:25:12,959 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 955 transitions. Word has length 258 [2024-11-24 00:25:12,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:12,959 INFO L471 AbstractCegarLoop]: Abstraction has 674 states and 955 transitions. [2024-11-24 00:25:12,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 16 states have internal predecessors, (83), 11 states have call successors, (33), 5 states have call predecessors, (33), 6 states have return successors, (31), 11 states have call predecessors, (31), 10 states have call successors, (31) [2024-11-24 00:25:12,959 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 955 transitions. [2024-11-24 00:25:12,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2024-11-24 00:25:12,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:12,963 INFO L218 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:12,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 00:25:13,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-24 00:25:13,164 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:13,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:13,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1130493544, now seen corresponding path program 1 times [2024-11-24 00:25:13,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:13,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524398323] [2024-11-24 00:25:13,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:13,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:20,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:21,922 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 18 proven. 12 refuted. 0 times theorem prover too weak. 511 trivial. 0 not checked. [2024-11-24 00:25:21,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:25:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524398323] [2024-11-24 00:25:21,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524398323] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:25:21,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256632285] [2024-11-24 00:25:21,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:21,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:21,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:25:21,925 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:25:21,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:25:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:25:30,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 5299 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:25:30,806 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:25:30,967 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-24 00:25:30,967 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:25:30,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256632285] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:25:30,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:25:30,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2024-11-24 00:25:30,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386915398] [2024-11-24 00:25:30,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:25:30,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:25:30,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:25:30,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:25:30,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:25:30,969 INFO L87 Difference]: Start difference. First operand 674 states and 955 transitions. Second operand has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2024-11-24 00:25:32,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:25:32,119 INFO L93 Difference]: Finished difference Result 1125 states and 1566 transitions. [2024-11-24 00:25:32,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:25:32,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 270 [2024-11-24 00:25:32,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:25:32,126 INFO L225 Difference]: With dead ends: 1125 [2024-11-24 00:25:32,126 INFO L226 Difference]: Without dead ends: 507 [2024-11-24 00:25:32,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:25:32,130 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 0 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1380 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:25:32,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1380 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:25:32,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2024-11-24 00:25:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2024-11-24 00:25:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 297 states have (on average 1.1986531986531987) internal successors, (356), 305 states have internal predecessors, (356), 160 states have call successors, (160), 44 states have call predecessors, (160), 49 states have return successors, (167), 159 states have call predecessors, (167), 158 states have call successors, (167) [2024-11-24 00:25:32,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 683 transitions. [2024-11-24 00:25:32,188 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 683 transitions. Word has length 270 [2024-11-24 00:25:32,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:25:32,189 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 683 transitions. [2024-11-24 00:25:32,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.0) internal successors, (96), 5 states have internal predecessors, (96), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2024-11-24 00:25:32,190 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 683 transitions. [2024-11-24 00:25:32,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2024-11-24 00:25:32,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:25:32,193 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:25:32,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:25:32,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-24 00:25:32,393 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:25:32,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:25:32,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1557431255, now seen corresponding path program 1 times [2024-11-24 00:25:32,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:25:32,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785145226] [2024-11-24 00:25:32,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:32,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:25:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-24 00:25:46,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [826281121] [2024-11-24 00:25:46,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:25:46,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:25:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:25:46,228 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:25:46,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85bc392e-8b94-4d75-b46a-7a9ee4aedc69/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process