./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f4ea1bf819896c6e25ef3f7fb1779a7e8667d9fd31f879e3224eef1df9a587fe --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:15:33,652 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:15:33,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-27 20:15:33,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:15:33,728 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:15:33,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:15:33,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:15:33,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:15:33,757 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:15:33,757 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:15:33,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:15:33,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:15:33,758 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:15:33,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:15:33,758 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:15:33,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:15:33,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:15:33,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:15:33,759 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:15:33,759 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:15:33,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:15:33,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:15:33,760 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:15:33,760 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:15:33,760 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:15:33,760 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:15:33,760 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:33,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:33,761 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:33,761 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:33,761 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:15:33,761 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:15:33,761 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:15:33,762 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:15:33,762 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:33,762 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:15:33,762 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:15:33,762 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:15:33,762 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:15:33,762 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:15:33,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:15:33,763 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:15:33,763 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:15:33,763 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:15:33,763 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:15:33,763 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_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f4ea1bf819896c6e25ef3f7fb1779a7e8667d9fd31f879e3224eef1df9a587fe [2024-11-27 20:15:34,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:15:34,149 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:15:34,152 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:15:34,153 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:15:34,154 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:15:34,155 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i [2024-11-27 20:15:37,406 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/data/9ab30e189/ff7015e2f3454dc5bb7df9d90f585e11/FLAGb09a5c4c5 [2024-11-27 20:15:38,150 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:15:38,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i [2024-11-27 20:15:38,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/data/9ab30e189/ff7015e2f3454dc5bb7df9d90f585e11/FLAGb09a5c4c5 [2024-11-27 20:15:38,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/data/9ab30e189/ff7015e2f3454dc5bb7df9d90f585e11 [2024-11-27 20:15:38,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:15:38,213 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:15:38,214 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:38,215 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:15:38,220 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:15:38,221 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:38" (1/1) ... [2024-11-27 20:15:38,222 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2cd81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:38, skipping insertion in model container [2024-11-27 20:15:38,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:15:38" (1/1) ... [2024-11-27 20:15:38,377 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:15:38,668 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_758b502b-6367-4b98-a3e7-d58b7f771dd1/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4498,4511] [2024-11-27 20:15:38,676 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_758b502b-6367-4b98-a3e7-d58b7f771dd1/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4558,4571] [2024-11-27 20:15:39,843 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,844 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,844 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,846 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,848 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,868 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,869 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,874 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:39,875 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:40,951 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:40,952 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:41,101 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:15:41,115 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_758b502b-6367-4b98-a3e7-d58b7f771dd1/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4498,4511] [2024-11-27 20:15:41,118 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_758b502b-6367-4b98-a3e7-d58b7f771dd1/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness_negated.i[4558,4571] [2024-11-27 20:15:41,183 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,184 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,184 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,185 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,185 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,194 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,194 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,196 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,196 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8259] [2024-11-27 20:15:41,436 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,437 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-27 20:15:41,460 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8745-8756] [2024-11-27 20:15:41,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:15:41,834 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:15:41,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41 WrapperNode [2024-11-27 20:15:41,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:15:41,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:41,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:15:41,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:15:41,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:41,967 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,074 INFO L138 Inliner]: procedures = 680, calls = 2612, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 803 [2024-11-27 20:15:42,079 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:15:42,080 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:15:42,080 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:15:42,080 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:15:42,092 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,092 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,100 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,197 INFO L175 MemorySlicer]: Split 527 memory accesses to 5 slices as follows [2, 257, 238, 7, 23]. 49 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 6, 5, 4]. The 493 writes are split as follows [0, 257, 232, 1, 3]. [2024-11-27 20:15:42,197 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,197 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,266 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,279 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,283 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:15:42,305 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:15:42,305 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:15:42,305 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:15:42,307 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (1/1) ... [2024-11-27 20:15:42,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:15:42,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:15:42,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:15:42,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:15:42,400 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-27 20:15:42,401 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-27 20:15:42,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 20:15:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-27 20:15:42,402 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-27 20:15:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-27 20:15:42,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-27 20:15:42,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-27 20:15:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-27 20:15:42,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-27 20:15:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2024-11-27 20:15:42,405 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-27 20:15:42,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:15:42,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-27 20:15:42,406 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-27 20:15:42,406 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:15:42,406 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:15:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 20:15:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:15:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:15:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-27 20:15:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-27 20:15:42,410 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-27 20:15:42,411 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2024-11-27 20:15:42,411 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 20:15:42,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-27 20:15:42,412 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-27 20:15:42,412 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 20:15:42,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-27 20:15:42,795 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:15:42,798 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:15:52,051 INFO L? ?]: Removed 75 outVars from TransFormulas that were not future-live. [2024-11-27 20:15:52,051 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:15:52,064 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:15:52,064 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 20:15:52,064 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:52 BoogieIcfgContainer [2024-11-27 20:15:52,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:15:52,071 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:15:52,071 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:15:52,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:15:52,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:15:38" (1/3) ... [2024-11-27 20:15:52,080 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1004d67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:52, skipping insertion in model container [2024-11-27 20:15:52,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:15:41" (2/3) ... [2024-11-27 20:15:52,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1004d67f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:15:52, skipping insertion in model container [2024-11-27 20:15:52,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:15:52" (3/3) ... [2024-11-27 20:15:52,084 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness_negated.i [2024-11-27 20:15:52,107 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:15:52,110 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_secure_zero_harness_negated.i that has 11 procedures, 104 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:15:52,191 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:15:52,207 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;@61333680, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:15:52,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:15:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-27 20:15:52,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:15:52,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:15:52,228 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:15:52,229 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:15:52,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:15:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1770303730, now seen corresponding path program 1 times [2024-11-27 20:15:52,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:15:52,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479566633] [2024-11-27 20:15:52,245 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:15:52,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:17:42,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:17:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 20:17:43,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:17:43,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479566633] [2024-11-27 20:17:43,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479566633] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:17:43,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862168860] [2024-11-27 20:17:43,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:17:43,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:17:43,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:17:43,758 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:17:43,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:19:39,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:39,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 7566 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:19:39,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:39,868 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-27 20:19:39,868 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:19:39,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862168860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:39,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:19:39,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:19:39,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153969753] [2024-11-27 20:19:39,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:39,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:19:39,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:39,910 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:19:39,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:39,915 INFO L87 Difference]: Start difference. First operand has 104 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 20:19:39,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:39,980 INFO L93 Difference]: Finished difference Result 204 states and 267 transitions. [2024-11-27 20:19:39,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:19:39,984 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2024-11-27 20:19:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:39,996 INFO L225 Difference]: With dead ends: 204 [2024-11-27 20:19:39,996 INFO L226 Difference]: Without dead ends: 99 [2024-11-27 20:19:40,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:40,010 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:40,010 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:19:40,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-27 20:19:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-27 20:19:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.1940298507462686) internal successors, (80), 68 states have internal predecessors, (80), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 20:19:40,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 121 transitions. [2024-11-27 20:19:40,071 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 121 transitions. Word has length 65 [2024-11-27 20:19:40,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:40,071 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 121 transitions. [2024-11-27 20:19:40,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-27 20:19:40,072 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 121 transitions. [2024-11-27 20:19:40,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-27 20:19:40,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:40,076 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:40,108 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:19:40,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:19:40,277 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:40,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:40,278 INFO L85 PathProgramCache]: Analyzing trace with hash -638643194, now seen corresponding path program 1 times [2024-11-27 20:19:40,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:40,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621683510] [2024-11-27 20:19:40,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:40,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:30,578 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 20:21:30,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:30,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621683510] [2024-11-27 20:21:30,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621683510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:21:30,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555195608] [2024-11-27 20:21:30,579 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:30,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:21:30,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:21:30,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:21:30,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:23:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:16,377 INFO L256 TraceCheckSpWp]: Trace formula consists of 7566 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:23:16,384 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:23:17,054 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:23:17,054 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:23:17,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555195608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:17,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:23:17,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-27 20:23:17,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559641748] [2024-11-27 20:23:17,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:17,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:23:17,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:17,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:23:17,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:23:17,057 INFO L87 Difference]: Start difference. First operand 99 states and 121 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:23:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:17,983 INFO L93 Difference]: Finished difference Result 176 states and 219 transitions. [2024-11-27 20:23:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:23:17,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2024-11-27 20:23:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:17,987 INFO L225 Difference]: With dead ends: 176 [2024-11-27 20:23:17,987 INFO L226 Difference]: Without dead ends: 102 [2024-11-27 20:23:17,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:23:17,989 INFO L435 NwaCegarLoop]: 100 mSDtfsCounter, 120 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:17,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 374 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 20:23:17,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-27 20:23:18,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-27 20:23:18,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 71 states have internal predecessors, (82), 21 states have call successors, (21), 10 states have call predecessors, (21), 11 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2024-11-27 20:23:18,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 125 transitions. [2024-11-27 20:23:18,007 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 125 transitions. Word has length 65 [2024-11-27 20:23:18,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:18,008 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 125 transitions. [2024-11-27 20:23:18,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2024-11-27 20:23:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 125 transitions. [2024-11-27 20:23:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-27 20:23:18,010 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:18,011 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:18,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:23:18,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:23:18,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:18,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:18,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1189522607, now seen corresponding path program 1 times [2024-11-27 20:23:18,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:18,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396260932] [2024-11-27 20:23:18,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:18,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 20:24:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396260932] [2024-11-27 20:24:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396260932] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:24:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860505313] [2024-11-27 20:24:59,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:59,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:24:59,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:24:59,331 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:24:59,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:26:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:41,600 INFO L256 TraceCheckSpWp]: Trace formula consists of 7583 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-27 20:26:41,608 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:42,581 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 20:26:42,581 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:26:42,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860505313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:42,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:26:42,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2024-11-27 20:26:42,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606769230] [2024-11-27 20:26:42,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:42,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:26:42,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:42,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:26:42,584 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:26:42,584 INFO L87 Difference]: Start difference. First operand 102 states and 125 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-27 20:26:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:43,696 INFO L93 Difference]: Finished difference Result 174 states and 213 transitions. [2024-11-27 20:26:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:26:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2024-11-27 20:26:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:43,699 INFO L225 Difference]: With dead ends: 174 [2024-11-27 20:26:43,699 INFO L226 Difference]: Without dead ends: 99 [2024-11-27 20:26:43,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:26:43,700 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 130 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:43,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 433 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:26:43,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-27 20:26:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-27 20:26:43,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 68 states have internal predecessors, (79), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 20:26:43,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 120 transitions. [2024-11-27 20:26:43,711 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 120 transitions. Word has length 71 [2024-11-27 20:26:43,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:43,712 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 120 transitions. [2024-11-27 20:26:43,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-27 20:26:43,712 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 120 transitions. [2024-11-27 20:26:43,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-27 20:26:43,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:43,715 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:43,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:26:43,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:43,915 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:43,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:43,916 INFO L85 PathProgramCache]: Analyzing trace with hash -89590361, now seen corresponding path program 1 times [2024-11-27 20:26:43,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:43,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180946567] [2024-11-27 20:26:43,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:43,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:21,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2024-11-27 20:28:32,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:32,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180946567] [2024-11-27 20:28:32,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180946567] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:32,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203525233] [2024-11-27 20:28:32,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:32,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:32,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:32,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:32,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:30:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:08,470 INFO L256 TraceCheckSpWp]: Trace formula consists of 7617 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-27 20:30:08,479 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:30:08,968 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 [2024-11-27 20:30:10,862 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-27 20:30:10,862 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:30:10,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203525233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:10,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:30:10,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 19 [2024-11-27 20:30:10,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371781785] [2024-11-27 20:30:10,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:10,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:30:10,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:10,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:30:10,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:30:10,866 INFO L87 Difference]: Start difference. First operand 99 states and 120 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-27 20:30:14,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-27 20:30:18,998 WARN L539 Checker$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] [2024-11-27 20:30:24,751 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] [2024-11-27 20:30:25,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:25,165 INFO L93 Difference]: Finished difference Result 204 states and 248 transitions. [2024-11-27 20:30:25,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:30:25,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 83 [2024-11-27 20:30:25,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:25,168 INFO L225 Difference]: With dead ends: 204 [2024-11-27 20:30:25,168 INFO L226 Difference]: Without dead ends: 130 [2024-11-27 20:30:25,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2024-11-27 20:30:25,170 INFO L435 NwaCegarLoop]: 106 mSDtfsCounter, 63 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:25,171 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 752 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 238 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2024-11-27 20:30:25,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-27 20:30:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 124. [2024-11-27 20:30:25,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 89 states have (on average 1.202247191011236) internal successors, (107), 91 states have internal predecessors, (107), 21 states have call successors, (21), 12 states have call predecessors, (21), 13 states have return successors, (21), 20 states have call predecessors, (21), 20 states have call successors, (21) [2024-11-27 20:30:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 149 transitions. [2024-11-27 20:30:25,196 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 149 transitions. Word has length 83 [2024-11-27 20:30:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:25,196 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 149 transitions. [2024-11-27 20:30:25,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 9 states have internal predecessors, (47), 4 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-27 20:30:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 149 transitions. [2024-11-27 20:30:25,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 20:30:25,199 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:25,199 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:25,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:30:25,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_758b502b-6367-4b98-a3e7-d58b7f771dd1/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-27 20:30:25,400 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:25,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:25,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1123776145, now seen corresponding path program 1 times [2024-11-27 20:30:25,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:25,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983118369] [2024-11-27 20:30:25,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:25,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms