./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/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_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/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_6bfbca3a-092d-46f6-bf8d-356e9a933501/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 cd9a2129027d8e6e433405050df678799cbcbb62ed513869cd94ee61dabdad6d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:36:22,143 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:36:22,247 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 04:36:22,253 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:36:22,253 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:36:22,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:36:22,289 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:36:22,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:36:22,290 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:36:22,290 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:36:22,290 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:36:22,290 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:36:22,291 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:36:22,291 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:36:22,291 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:36:22,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:36:22,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:36:22,291 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:36:22,292 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:36:22,292 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:36:22,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:36:22,292 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:36:22,292 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:36:22,292 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:36:22,293 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:36:22,293 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:36:22,293 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:22,293 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:22,293 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:22,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:22,294 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:36:22,294 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:22,294 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:22,294 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:22,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:22,294 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:36:22,295 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:36:22,295 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:36:22,295 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:36:22,295 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:36:22,295 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:36:22,295 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:36:22,296 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:36:22,296 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:36:22,296 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:36:22,296 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_6bfbca3a-092d-46f6-bf8d-356e9a933501/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 -> cd9a2129027d8e6e433405050df678799cbcbb62ed513869cd94ee61dabdad6d [2024-11-28 04:36:22,698 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:36:22,712 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:36:22,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:36:22,717 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:36:22,718 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:36:22,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2024-11-28 04:36:25,912 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/data/07e1812b4/ba912ebb1b9142a5abd859749c2bc372/FLAGdc06962e0 [2024-11-28 04:36:26,635 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:36:26,636 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i [2024-11-28 04:36:26,670 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/data/07e1812b4/ba912ebb1b9142a5abd859749c2bc372/FLAGdc06962e0 [2024-11-28 04:36:26,695 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/data/07e1812b4/ba912ebb1b9142a5abd859749c2bc372 [2024-11-28 04:36:26,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:36:26,700 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:36:26,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:26,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:36:26,707 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:36:26,708 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:26" (1/1) ... [2024-11-28 04:36:26,710 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc18d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:26, skipping insertion in model container [2024-11-28 04:36:26,710 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:26" (1/1) ... [2024-11-28 04:36:26,841 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:36:27,160 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_6bfbca3a-092d-46f6-bf8d-356e9a933501/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2024-11-28 04:36:27,172 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_6bfbca3a-092d-46f6-bf8d-356e9a933501/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2024-11-28 04:36:28,319 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,321 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,322 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,323 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,325 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,343 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,344 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,346 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:28,347 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,387 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,388 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:29,518 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:36:29,535 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_6bfbca3a-092d-46f6-bf8d-356e9a933501/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4495,4508] [2024-11-28 04:36:29,536 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_6bfbca3a-092d-46f6-bf8d-356e9a933501/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_harness.i[4555,4568] [2024-11-28 04:36:29,605 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,606 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,608 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,610 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,611 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,620 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,620 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,622 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,622 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,837 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8073] [2024-11-28 04:36:29,839 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,839 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 04:36:29,860 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8559-8570] [2024-11-28 04:36:29,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:30,231 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:36:30,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30 WrapperNode [2024-11-28 04:36:30,233 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:30,235 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:30,235 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:36:30,235 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:36:30,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,343 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,428 INFO L138 Inliner]: procedures = 680, calls = 2500, calls flagged for inlining = 53, calls inlined = 4, statements flattened = 757 [2024-11-28 04:36:30,429 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:30,429 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:36:30,429 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:36:30,429 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:36:30,445 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,454 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,569 INFO L175 MemorySlicer]: Split 530 memory accesses to 5 slices as follows [2, 257, 238, 6, 27]. 48 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 0, 6, 5, 4]. The 495 writes are split as follows [0, 257, 232, 0, 6]. [2024-11-28 04:36:30,569 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,570 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,642 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,645 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,648 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:36:30,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:36:30,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:36:30,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:36:30,685 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (1/1) ... [2024-11-28 04:36:30,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:30,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:30,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:36:30,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:36:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_clean_up [2024-11-28 04:36:30,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_clean_up [2024-11-28 04:36:30,775 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 04:36:30,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 04:36:30,776 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:36:30,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:36:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:36:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 04:36:30,777 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 04:36:30,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 04:36:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 04:36:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 04:36:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 04:36:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 04:36:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2024-11-28 04:36:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2024-11-28 04:36:30,782 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:36:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 04:36:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 04:36:30,784 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:36:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:36:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:36:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:36:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:36:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:36:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:36:31,178 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:36:31,182 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:36:40,290 INFO L? ?]: Removed 48 outVars from TransFormulas that were not future-live. [2024-11-28 04:36:40,291 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:36:40,303 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:36:40,304 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 04:36:40,304 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:40 BoogieIcfgContainer [2024-11-28 04:36:40,304 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:36:40,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:36:40,307 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:36:40,313 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:36:40,313 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:36:26" (1/3) ... [2024-11-28 04:36:40,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcecb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:40, skipping insertion in model container [2024-11-28 04:36:40,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:30" (2/3) ... [2024-11-28 04:36:40,314 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fcecb11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:40, skipping insertion in model container [2024-11-28 04:36:40,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:40" (3/3) ... [2024-11-28 04:36:40,316 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_harness.i [2024-11-28 04:36:40,334 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:36:40,336 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_clean_up_harness.i that has 9 procedures, 84 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 04:36:40,399 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:36:40,414 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;@194e5aae, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:36:40,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:36:40,418 INFO L276 IsEmpty]: Start isEmpty. Operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:36:40,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:36:40,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:40,429 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-28 04:36:40,430 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:40,435 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:40,436 INFO L85 PathProgramCache]: Analyzing trace with hash 2004625470, now seen corresponding path program 1 times [2024-11-28 04:36:40,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104042511] [2024-11-28 04:36:40,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:40,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:16,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:38:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:17,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104042511] [2024-11-28 04:38:17,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104042511] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:17,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799028311] [2024-11-28 04:38:17,588 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:17,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:17,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:17,593 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:17,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:39:55,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:55,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 7566 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:39:55,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:39:55,605 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:39:55,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799028311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:55,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:39:55,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:39:55,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639685853] [2024-11-28 04:39:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:55,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:39:55,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:55,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:39:55,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:39:55,644 INFO L87 Difference]: Start difference. First operand has 84 states, 58 states have (on average 1.2413793103448276) internal successors, (72), 59 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:39:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:55,686 INFO L93 Difference]: Finished difference Result 152 states and 201 transitions. [2024-11-28 04:39:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:39:55,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2024-11-28 04:39:55,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:55,698 INFO L225 Difference]: With dead ends: 152 [2024-11-28 04:39:55,699 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 04:39:55,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:39:55,706 INFO L435 NwaCegarLoop]: 102 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, 102 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:55,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:39:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 04:39:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2024-11-28 04:39:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 54 states have (on average 1.2222222222222223) internal successors, (66), 55 states have internal predecessors, (66), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 04:39:55,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 97 transitions. [2024-11-28 04:39:55,760 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 97 transitions. Word has length 56 [2024-11-28 04:39:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:55,762 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 97 transitions. [2024-11-28 04:39:55,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.5) internal successors, (31), 2 states have internal predecessors, (31), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:39:55,763 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 97 transitions. [2024-11-28 04:39:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:39:55,766 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:55,767 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-28 04:39:55,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:39:55,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:55,968 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:55,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:55,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1565352712, now seen corresponding path program 1 times [2024-11-28 04:39:55,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:55,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405530578] [2024-11-28 04:39:55,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:41:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:41:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:41:37,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:41:37,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405530578] [2024-11-28 04:41:37,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405530578] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:41:37,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316388037] [2024-11-28 04:41:37,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:41:37,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:41:37,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:41:37,142 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:41:37,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:43:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:16,266 INFO L256 TraceCheckSpWp]: Trace formula consists of 7566 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:43:16,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:16,922 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:43:16,923 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:43:16,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316388037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:16,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:43:16,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 04:43:16,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219742766] [2024-11-28 04:43:16,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:16,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:43:16,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:16,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:43:16,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:43:16,925 INFO L87 Difference]: Start difference. First operand 79 states and 97 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:43:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:17,517 INFO L93 Difference]: Finished difference Result 139 states and 173 transitions. [2024-11-28 04:43:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:43:17,518 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 56 [2024-11-28 04:43:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:17,521 INFO L225 Difference]: With dead ends: 139 [2024-11-28 04:43:17,521 INFO L226 Difference]: Without dead ends: 82 [2024-11-28 04:43:17,522 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:43:17,523 INFO L435 NwaCegarLoop]: 79 mSDtfsCounter, 95 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:17,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 225 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:43:17,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-28 04:43:17,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2024-11-28 04:43:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 56 states have (on average 1.2142857142857142) internal successors, (68), 58 states have internal predecessors, (68), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-28 04:43:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-28 04:43:17,541 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 56 [2024-11-28 04:43:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:17,541 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-28 04:43:17,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:43:17,542 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-28 04:43:17,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:43:17,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:17,544 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:43:17,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:43:17,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:17,745 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:17,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1361338427, now seen corresponding path program 1 times [2024-11-28 04:43:17,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989431861] [2024-11-28 04:43:17,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:17,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:49,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:50,612 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:44:50,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:50,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989431861] [2024-11-28 04:44:50,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989431861] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:44:50,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232232422] [2024-11-28 04:44:50,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:50,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:50,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:44:50,619 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:44:50,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:46:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:23,415 INFO L256 TraceCheckSpWp]: Trace formula consists of 7580 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:46:23,422 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:23,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:46:23,458 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:46:23,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232232422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:23,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:46:23,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:46:23,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102539527] [2024-11-28 04:46:23,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:23,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:46:23,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:23,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:46:23,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:23,461 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:46:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:23,569 INFO L93 Difference]: Finished difference Result 145 states and 182 transitions. [2024-11-28 04:46:23,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:46:23,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-28 04:46:23,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:23,572 INFO L225 Difference]: With dead ends: 145 [2024-11-28 04:46:23,572 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 04:46:23,573 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:46:23,574 INFO L435 NwaCegarLoop]: 94 mSDtfsCounter, 1 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:23,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 276 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:46:23,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 04:46:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2024-11-28 04:46:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 58 states have (on average 1.206896551724138) internal successors, (70), 60 states have internal predecessors, (70), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-28 04:46:23,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 102 transitions. [2024-11-28 04:46:23,594 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 102 transitions. Word has length 62 [2024-11-28 04:46:23,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:23,594 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 102 transitions. [2024-11-28 04:46:23,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:46:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 102 transitions. [2024-11-28 04:46:23,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:46:23,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:23,601 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:46:23,628 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:46:23,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:23,802 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:23,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:23,802 INFO L85 PathProgramCache]: Analyzing trace with hash -701806905, now seen corresponding path program 1 times [2024-11-28 04:46:23,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:23,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40980209] [2024-11-28 04:46:23,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:23,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:59,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:48:00,458 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 04:48:00,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:48:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40980209] [2024-11-28 04:48:00,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40980209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:48:00,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745587551] [2024-11-28 04:48:00,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:48:00,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:48:00,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:48:00,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:48:00,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:49:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:49:35,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 7575 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:49:35,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:49:35,195 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 04:49:35,195 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:49:35,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745587551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:49:35,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:49:35,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:49:35,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602703248] [2024-11-28 04:49:35,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:49:35,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:49:35,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:49:35,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:49:35,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:49:35,197 INFO L87 Difference]: Start difference. First operand 84 states and 102 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:49:35,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:49:35,342 INFO L93 Difference]: Finished difference Result 148 states and 185 transitions. [2024-11-28 04:49:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:49:35,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 62 [2024-11-28 04:49:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:49:35,348 INFO L225 Difference]: With dead ends: 148 [2024-11-28 04:49:35,348 INFO L226 Difference]: Without dead ends: 86 [2024-11-28 04:49:35,349 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:49:35,350 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 0 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:49:35,353 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 277 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:49:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-11-28 04:49:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-11-28 04:49:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.2) internal successors, (72), 62 states have internal predecessors, (72), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (16), 15 states have call predecessors, (16), 15 states have call successors, (16) [2024-11-28 04:49:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2024-11-28 04:49:35,366 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 62 [2024-11-28 04:49:35,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:49:35,366 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2024-11-28 04:49:35,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-28 04:49:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2024-11-28 04:49:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:49:35,369 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:49:35,369 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:49:35,397 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:49:35,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bfbca3a-092d-46f6-bf8d-356e9a933501/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:49:35,570 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:49:35,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:49:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash 484028739, now seen corresponding path program 1 times [2024-11-28 04:49:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:49:35,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967148718] [2024-11-28 04:49:35,570 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:49:35,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:51:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:51:09,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-28 04:51:09,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:51:09,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967148718] [2024-11-28 04:51:09,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967148718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:51:09,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:51:09,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:51:09,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965571499] [2024-11-28 04:51:09,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:51:09,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:51:09,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:51:09,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:51:09,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:51:09,309 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:51:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:51:09,766 INFO L93 Difference]: Finished difference Result 109 states and 133 transitions. [2024-11-28 04:51:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:51:09,768 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 62 [2024-11-28 04:51:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:51:09,769 INFO L225 Difference]: With dead ends: 109 [2024-11-28 04:51:09,769 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 04:51:09,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:51:09,771 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 21 mSDsluCounter, 311 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:51:09,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 397 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:51:09,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 04:51:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2024-11-28 04:51:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 58 states have (on average 1.1896551724137931) internal successors, (69), 59 states have internal predecessors, (69), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 04:51:09,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 100 transitions. [2024-11-28 04:51:09,781 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 100 transitions. Word has length 62 [2024-11-28 04:51:09,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:51:09,782 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 100 transitions. [2024-11-28 04:51:09,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.5) internal successors, (39), 7 states have internal predecessors, (39), 5 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:51:09,782 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 100 transitions. [2024-11-28 04:51:09,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:51:09,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:51:09,784 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-28 04:51:09,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:51:09,784 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:51:09,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:51:09,785 INFO L85 PathProgramCache]: Analyzing trace with hash 618819662, now seen corresponding path program 1 times [2024-11-28 04:51:09,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:51:09,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561786346] [2024-11-28 04:51:09,785 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:51:09,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms