./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/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 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:16:42,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:16:42,777 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-28 02:16:42,787 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:16:42,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:16:42,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:16:42,821 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:16:42,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:16:42,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:16:42,822 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:16:42,823 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:16:42,823 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:16:42,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:16:42,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:16:42,824 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:16:42,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:16:42,825 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:16:42,826 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:16:42,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:16:42,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:16:42,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:16:42,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:42,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:16:42,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:42,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:16:42,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:16:42,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:16:42,828 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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/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 -> 9a96b91703f0cc76adc9b0fdbd8386a96920c1be21a810b6415a59c2166f1461 [2024-11-28 02:16:43,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:16:43,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:16:43,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:16:43,167 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:16:43,168 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:16:43,169 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2024-11-28 02:16:46,159 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/data/c06126026/5771a0096cc3422d843f5199b3301f85/FLAG90c056e45 [2024-11-28 02:16:46,839 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:16:46,840 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i [2024-11-28 02:16:46,891 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/data/c06126026/5771a0096cc3422d843f5199b3301f85/FLAG90c056e45 [2024-11-28 02:16:46,914 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/data/c06126026/5771a0096cc3422d843f5199b3301f85 [2024-11-28 02:16:46,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:16:46,919 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:16:46,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:16:46,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:16:46,926 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:16:46,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:16:46" (1/1) ... [2024-11-28 02:16:46,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26133736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:46, skipping insertion in model container [2024-11-28 02:16:46,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:16:46" (1/1) ... [2024-11-28 02:16:47,044 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:16:47,367 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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2024-11-28 02:16:47,378 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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2024-11-28 02:16:48,412 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,412 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,413 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,414 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,415 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,432 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,433 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,435 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:48,436 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,340 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,340 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,444 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:16:49,544 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:16:49,563 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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4494,4507] [2024-11-28 02:16:49,564 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_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/sv-benchmarks/c/aws-c-common/aws_byte_buf_advance_harness.i[4554,4567] [2024-11-28 02:16:49,631 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,632 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,633 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,633 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,648 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,649 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,650 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,652 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,805 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : "+r"(index)); [8291] [2024-11-28 02:16:49,807 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,807 WARN L1675 CHandler]: Possible shadowing of function index [2024-11-28 02:16:49,824 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [8777-8788] [2024-11-28 02:16:49,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:16:50,119 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:16:50,120 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50 WrapperNode [2024-11-28 02:16:50,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:16:50,121 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:16:50,121 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:16:50,121 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:16:50,125 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,230 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,337 INFO L138 Inliner]: procedures = 680, calls = 2671, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 974 [2024-11-28 02:16:50,338 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:16:50,338 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:16:50,339 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:16:50,339 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:16:50,348 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,349 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,363 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,468 INFO L175 MemorySlicer]: Split 591 memory accesses to 5 slices as follows [2, 257, 6, 81, 245]. 43 percent of accesses are in the largest equivalence class. The 25 initializations are split as follows [2, 0, 0, 12, 11]. The 508 writes are split as follows [0, 257, 2, 17, 232]. [2024-11-28 02:16:50,468 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,469 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,519 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,527 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,531 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,537 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,541 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,550 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:16:50,551 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:16:50,551 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:16:50,551 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:16:50,552 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (1/1) ... [2024-11-28 02:16:50,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:16:50,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:16:50,593 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:16:50,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:16:50,623 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2024-11-28 02:16:50,624 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2024-11-28 02:16:50,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:16:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2024-11-28 02:16:50,625 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2024-11-28 02:16:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-28 02:16:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-28 02:16:50,625 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:16:50,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:16:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-28 02:16:50,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2024-11-28 02:16:50,627 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:16:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:16:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2024-11-28 02:16:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2024-11-28 02:16:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2024-11-28 02:16:50,628 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2024-11-28 02:16:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-28 02:16:50,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-28 02:16:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-28 02:16:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-28 02:16:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-28 02:16:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 02:16:50,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 02:16:50,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 02:16:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 02:16:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 02:16:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2024-11-28 02:16:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2024-11-28 02:16:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2024-11-28 02:16:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2024-11-28 02:16:50,632 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:16:50,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:16:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:16:50,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:16:50,982 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:16:50,984 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:17:00,883 INFO L? ?]: Removed 110 outVars from TransFormulas that were not future-live. [2024-11-28 02:17:00,883 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:17:00,901 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:17:00,904 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:17:00,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:00 BoogieIcfgContainer [2024-11-28 02:17:00,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:17:00,907 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:17:00,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:17:00,916 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:17:00,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:16:46" (1/3) ... [2024-11-28 02:17:00,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e46886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:17:00, skipping insertion in model container [2024-11-28 02:17:00,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:16:50" (2/3) ... [2024-11-28 02:17:00,917 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e46886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:17:00, skipping insertion in model container [2024-11-28 02:17:00,917 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:17:00" (3/3) ... [2024-11-28 02:17:00,918 INFO L128 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_advance_harness.i [2024-11-28 02:17:00,936 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:17:00,937 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG aws_byte_buf_advance_harness.i that has 12 procedures, 172 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 02:17:00,997 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:17:01,008 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;@49c34006, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:17:01,009 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:17:01,013 INFO L276 IsEmpty]: Start isEmpty. Operand has 172 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-28 02:17:01,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 02:17:01,023 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:17:01,024 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:17:01,024 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:17:01,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:17:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1475621305, now seen corresponding path program 1 times [2024-11-28 02:17:01,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:17:01,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141976432] [2024-11-28 02:17:01,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:17:01,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:18:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:18:37,926 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 02:18:37,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:18:37,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141976432] [2024-11-28 02:18:37,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141976432] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:18:37,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902762898] [2024-11-28 02:18:37,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:18:37,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:18:37,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:18:37,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:18:37,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:20:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:20:11,585 INFO L256 TraceCheckSpWp]: Trace formula consists of 7741 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 02:20:11,598 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:20:11,614 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-28 02:20:11,615 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:20:11,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902762898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:20:11,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:20:11,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 02:20:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366446] [2024-11-28 02:20:11,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:20:11,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:20:11,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:20:11,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:20:11,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:20:11,640 INFO L87 Difference]: Start difference. First operand has 172 states, 105 states have (on average 1.2190476190476192) internal successors, (128), 105 states have internal predecessors, (128), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (55), 55 states have call predecessors, (55), 55 states have call successors, (55) Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:20:11,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:20:11,681 INFO L93 Difference]: Finished difference Result 340 states and 509 transitions. [2024-11-28 02:20:11,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:20:11,683 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 89 [2024-11-28 02:20:11,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:20:11,691 INFO L225 Difference]: With dead ends: 340 [2024-11-28 02:20:11,691 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 02:20:11,696 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:20:11,699 INFO L435 NwaCegarLoop]: 233 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, 233 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:20:11,699 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:20:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 02:20:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2024-11-28 02:20:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 100 states have (on average 1.19) internal successors, (119), 101 states have internal predecessors, (119), 55 states have call successors, (55), 11 states have call predecessors, (55), 11 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-28 02:20:11,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2024-11-28 02:20:11,766 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 89 [2024-11-28 02:20:11,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:20:11,767 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2024-11-28 02:20:11,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 02:20:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2024-11-28 02:20:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:20:11,772 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:20:11,772 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:20:11,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:20:11,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:20:11,973 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:20:11,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:20:11,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2098865434, now seen corresponding path program 1 times [2024-11-28 02:20:11,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:20:11,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315528549] [2024-11-28 02:20:11,974 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:20:11,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:21:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:21:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 02:21:40,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:21:40,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315528549] [2024-11-28 02:21:40,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315528549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:21:40,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652611941] [2024-11-28 02:21:40,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:21:40,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:21:40,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:21:40,266 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:21:40,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:23:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:23:10,605 INFO L256 TraceCheckSpWp]: Trace formula consists of 7835 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:23:10,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:23:11,213 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 02:23:11,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:23:11,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652611941] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:23:11,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:23:11,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2024-11-28 02:23:11,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637051141] [2024-11-28 02:23:11,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:23:11,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:23:11,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:23:11,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:23:11,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:23:11,216 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:23:12,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:23:12,807 INFO L93 Difference]: Finished difference Result 330 states and 458 transitions. [2024-11-28 02:23:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:23:12,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 94 [2024-11-28 02:23:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:23:12,813 INFO L225 Difference]: With dead ends: 330 [2024-11-28 02:23:12,813 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 02:23:12,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:23:12,816 INFO L435 NwaCegarLoop]: 168 mSDtfsCounter, 233 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:23:12,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 446 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:23:12,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 02:23:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-28 02:23:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (63), 54 states have call predecessors, (63), 54 states have call successors, (63) [2024-11-28 02:23:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 239 transitions. [2024-11-28 02:23:12,850 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 239 transitions. Word has length 94 [2024-11-28 02:23:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:23:12,851 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 239 transitions. [2024-11-28 02:23:12,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 02:23:12,851 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 239 transitions. [2024-11-28 02:23:12,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 02:23:12,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:23:12,858 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:23:12,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:23:13,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:23:13,059 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:23:13,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:23:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2038488081, now seen corresponding path program 1 times [2024-11-28 02:23:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:23:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155929286] [2024-11-28 02:23:13,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:23:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:24:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:24:51,372 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 02:24:51,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:24:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155929286] [2024-11-28 02:24:51,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155929286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:24:51,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128620844] [2024-11-28 02:24:51,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:24:51,374 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:24:51,374 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:24:51,377 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:24:51,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:26:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:26:34,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 7852 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:26:34,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:26:35,285 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 02:26:35,285 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:26:35,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128620844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:26:35,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:26:35,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2024-11-28 02:26:35,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225476651] [2024-11-28 02:26:35,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:26:35,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:26:35,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:26:35,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:26:35,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:26:35,287 INFO L87 Difference]: Start difference. First operand 170 states and 239 transitions. Second operand has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 02:26:37,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:26:37,939 INFO L93 Difference]: Finished difference Result 291 states and 412 transitions. [2024-11-28 02:26:37,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:26:37,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 100 [2024-11-28 02:26:37,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:26:37,944 INFO L225 Difference]: With dead ends: 291 [2024-11-28 02:26:37,944 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 02:26:37,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:26:37,946 INFO L435 NwaCegarLoop]: 165 mSDtfsCounter, 242 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:26:37,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 748 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:26:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 02:26:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-28 02:26:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (60), 54 states have call predecessors, (60), 54 states have call successors, (60) [2024-11-28 02:26:37,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 236 transitions. [2024-11-28 02:26:37,970 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 236 transitions. Word has length 100 [2024-11-28 02:26:37,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:26:37,971 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 236 transitions. [2024-11-28 02:26:37,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.5) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2024-11-28 02:26:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 236 transitions. [2024-11-28 02:26:37,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 02:26:37,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:26:37,974 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:26:38,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:26:38,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96ccef06-672e-4c62-9b2e-3d3ffe1c596d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:26:38,175 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:26:38,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:26:38,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1077153148, now seen corresponding path program 2 times [2024-11-28 02:26:38,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:26:38,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979572076] [2024-11-28 02:26:38,175 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:26:38,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:28:19,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 02:28:19,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:28:21,691 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2024-11-28 02:28:21,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:28:21,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979572076] [2024-11-28 02:28:21,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979572076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:28:21,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:28:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:28:21,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128410384] [2024-11-28 02:28:21,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:28:21,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:28:21,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:28:21,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:28:21,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:21,694 INFO L87 Difference]: Start difference. First operand 170 states and 236 transitions. Second operand has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:28:22,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:28:22,024 INFO L93 Difference]: Finished difference Result 255 states and 356 transitions. [2024-11-28 02:28:22,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:28:22,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 106 [2024-11-28 02:28:22,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:28:22,028 INFO L225 Difference]: With dead ends: 255 [2024-11-28 02:28:22,028 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 02:28:22,029 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:28:22,030 INFO L435 NwaCegarLoop]: 220 mSDtfsCounter, 0 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:28:22,030 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 641 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:28:22,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 02:28:22,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2024-11-28 02:28:22,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 102 states have (on average 1.1862745098039216) internal successors, (121), 104 states have internal predecessors, (121), 55 states have call successors, (55), 11 states have call predecessors, (55), 12 states have return successors, (59), 54 states have call predecessors, (59), 54 states have call successors, (59) [2024-11-28 02:28:22,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 235 transitions. [2024-11-28 02:28:22,052 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 235 transitions. Word has length 106 [2024-11-28 02:28:22,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:28:22,053 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 235 transitions. [2024-11-28 02:28:22,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.25) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 02:28:22,053 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 235 transitions. [2024-11-28 02:28:22,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 02:28:22,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:28:22,056 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:28:22,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:28:22,056 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:28:22,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:28:22,056 INFO L85 PathProgramCache]: Analyzing trace with hash 989252751, now seen corresponding path program 3 times [2024-11-28 02:28:22,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:28:22,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745432831] [2024-11-28 02:28:22,057 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:28:22,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:30:03,137 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 02:30:03,138 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:30:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-28 02:30:09,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:30:09,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745432831] [2024-11-28 02:30:09,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745432831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:30:09,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:30:09,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:30:09,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895940369] [2024-11-28 02:30:09,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:30:09,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:30:09,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:30:09,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:30:09,408 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:30:09,408 INFO L87 Difference]: Start difference. First operand 170 states and 235 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:30:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:30:10,120 INFO L93 Difference]: Finished difference Result 182 states and 257 transitions. [2024-11-28 02:30:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:30:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 112 [2024-11-28 02:30:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:30:10,124 INFO L225 Difference]: With dead ends: 182 [2024-11-28 02:30:10,124 INFO L226 Difference]: Without dead ends: 180 [2024-11-28 02:30:10,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:30:10,125 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 3 mSDsluCounter, 1358 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:30:10,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1591 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 02:30:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-28 02:30:10,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179. [2024-11-28 02:30:10,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 108 states have (on average 1.1759259259259258) internal successors, (127), 111 states have internal predecessors, (127), 56 states have call successors, (56), 12 states have call predecessors, (56), 14 states have return successors, (71), 55 states have call predecessors, (71), 55 states have call successors, (71) [2024-11-28 02:30:10,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2024-11-28 02:30:10,150 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 112 [2024-11-28 02:30:10,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:30:10,151 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2024-11-28 02:30:10,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 02:30:10,152 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2024-11-28 02:30:10,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-28 02:30:10,153 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:30:10,154 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:30:10,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:30:10,154 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:30:10,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:30:10,155 INFO L85 PathProgramCache]: Analyzing trace with hash -117099049, now seen corresponding path program 1 times [2024-11-28 02:30:10,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:30:10,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444402571] [2024-11-28 02:30:10,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:30:10,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms